Projektdateien hinzufügen.

Test_Delete.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.26430.14
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Test_Delete", "Test_Delete\Test_Delete.csproj", "{EE2CCB92-EABE-412D-97BB-6BF7A1077413}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{EE2CCB92-EABE-412D-97BB-6BF7A1077413}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{EE2CCB92-EABE-412D-97BB-6BF7A1077413}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{EE2CCB92-EABE-412D-97BB-6BF7A1077413}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{EE2CCB92-EABE-412D-97BB-6BF7A1077413}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+EndGlobal

Test_Delete/App.config

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+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+    <startup> 
+        <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.2" />
+    </startup>
+</configuration>

Test_Delete/Count.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Eugen.IO
+{
+    /// <summary>
+    /// Count files and/or directories
+    /// </summary>
+    class Count
+    {
+        #region Variablen
+        protected static long NumberOfFiles { set; get; } //Anzahl der Dateien
+        protected static long NumberOfDirectories { set; get; } //Anzahl der Verzeichnisse
+        #endregion
+
+        #region Konstruktor
+        /// <summary>
+        /// Count files or Directories in a directory.
+        /// </summary>
+        public Count()
+        {
+        }
+        #endregion
+
+        #region File
+        /// <summary>
+        /// Counts all files in a directory.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <returns>Number of found files.</returns>
+        public long File(string directoryName)
+        {
+            //Zählt alle Dateien in einem Verzeichnis
+            long numberOfFiles = 0;
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    numberOfFiles++;
+                }
+            }
+            catch (Exception)
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfFiles;
+        }
+
+        /// <summary>
+        /// Counts all files in a directory that correspond to a particular pattern sequence.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <returns>Number of found files.</returns>
+        public long File(string directoryName, string searchPattern)
+        {
+            //Zählt alle Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfFiles = 0;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern))
+                    {
+                        numberOfFiles++;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfFiles;
+        }
+
+        /// <summary>
+        /// Counts all files in a directory that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <param name="daysOld">Days the file must be old. 0=All files are counted.</param>
+        /// <returns>Number of found files.</returns>
+        public long File(string directoryName, string searchPattern, int daysOld)
+        {
+            //Zählt alle Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfFiles = 0;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern) && DaysOld(fileName, daysOld))
+                    {
+                        numberOfFiles++;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfFiles;
+        }
+
+        /// <summary>
+        /// Counts all files in a directory and all subdirectories that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <param name="daysOld">Days the file must be old. 0=All files are counted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <returns>Number of found files.</returns>
+        public long File(string directoryName, string searchPattern, int daysOld, bool recursive)
+        {
+            //Löscht alle Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfFiles = 0;
+            long tempNumberOfFiles = 0;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern) && DaysOld(fileName, daysOld))
+                    {
+                        numberOfFiles++;
+                    }
+                }
+
+                if (recursive)
+                {
+                    foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                    {
+                        tempNumberOfFiles = File(dirName, searchPattern, daysOld, recursive);
+
+                        numberOfFiles = numberOfFiles + tempNumberOfFiles;
+                        tempNumberOfFiles = 0;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfFiles;
+        }
+        #endregion
+
+        #region Directory
+        /// <summary>
+        /// Counts all directories in a directory.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <returns>Number of found directories.</returns>
+        public long Directory(string directoryName)
+        {
+            //Zählt das angegebene Verzeichnis
+            long numberOfDirectories = 0;
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    numberOfDirectories++;
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfDirectories;
+        }
+
+        /// <summary>
+        /// Counts all directories in a directory that correspond to a particular pattern sequence.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <returns>Number of found directories.</returns>
+        public long Directory(string directoryName, string searchPattern)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfDirectories = 0;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern))
+                    {
+                        numberOfDirectories++;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfDirectories;
+        }
+
+        /// <summary>
+        /// Counts all directories in a directory that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All files are counted.</param>
+        /// <returns>Number of found directories.</returns>
+        public long Directory(string directoryName, string searchPattern, int daysOld)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfDirectories = 0;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern) && DaysOld(dirName, daysOld))
+                    {
+                        numberOfDirectories++;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfDirectories;
+        }
+
+        /// <summary>
+        /// Counts all directories and all subdirectories in a directory that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All files are counted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <returns>Number of found directories.</returns>
+        public long Directory(string directoryName, string searchPattern, int daysOld, bool recursive)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen
+            //die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfDirectories = 0;
+            long tempNumberOfDirectories = 0;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern) && DaysOld(dirName, daysOld))
+                    {
+                        numberOfDirectories++;
+                    }
+                }
+
+                if (recursive)
+                {
+                    foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                    {
+                        tempNumberOfDirectories = Directory(dirName, searchPattern, daysOld, recursive);
+
+                        numberOfDirectories = numberOfDirectories + tempNumberOfDirectories;
+                        tempNumberOfDirectories = 0;
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return numberOfDirectories;
+        }
+
+        /// <summary>
+        /// Counts all directories and all subdirectories in a directory and the directory itself that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All files are counted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <param name="countItself">True=Add the directory itself to the counter, false=The directory itself is not added to the counter.</param>
+        /// <returns></returns>
+        public long Directory(string directoryName, string searchPattern, int daysOld, bool recursive, bool countItself)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen
+            //die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            long numberOfDirectories = 0;
+
+            numberOfDirectories = Directory(directoryName, searchPattern, daysOld, recursive);
+
+            if (countItself)
+            {
+                numberOfDirectories++;
+            }
+
+            return numberOfDirectories;
+        }
+        #endregion
+
+        #region Subroutines
+        /// <summary>
+        /// Checks whether the search pattern is included in the file name.
+        /// </summary>
+        /// <param name="fileName">A valid file name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <returns>The search pattern is included in the file name=true, otherwise=false.</returns>
+        private bool SearchPatternFile(string fileName, string searchPattern)
+        {
+            string tempFileName = "";
+            string tempExtension = "";
+            string tempPattern = "";
+            string tempPattern1 = "";
+            bool match = false;
+            try
+            {
+                if (searchPattern == "")
+                {
+                    match = true;
+                }
+                else if (searchPattern.StartsWith(".") | searchPattern.StartsWith("*."))
+                {
+                    //Wenn mit '*', dann '*' entfernen
+                    if (searchPattern.StartsWith("*"))
+                    {
+                        searchPattern = searchPattern.Replace("*", "");
+                    }
+
+                    //Nach Datei Erweiterung suchen
+                    if (Path.GetExtension(fileName).ToLower() == searchPattern.ToLower())
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.EndsWith("*"))
+                {
+                    //Nach Teilstück suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.Contains(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.EndsWith("*"))
+                {
+                    //Nach Anfang Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.StartsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.Contains("."))
+                {
+                    //Nach Teilstück suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+                    tempPattern = tempPattern.Remove(tempPattern.IndexOf("."));
+                    tempExtension = Path.GetExtension(fileName).ToLower();
+                    string test = searchPattern.Remove(0, searchPattern.IndexOf("."));
+
+                    if (tempFileName.EndsWith(tempPattern) & searchPattern.Remove(0, searchPattern.IndexOf(".")) == tempExtension)
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*"))
+                {
+                    //Nach Ende Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.EndsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.Contains("*"))
+                {
+                    //Nach Anfang und Ende Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Remove(searchPattern.IndexOf("*"));
+                    tempPattern1 = searchPattern.Remove(0, searchPattern.IndexOf("*") + 1);
+
+                    if (tempFileName.StartsWith(tempPattern) & tempFileName.EndsWith(tempPattern1))
+                    {
+                        match = true;
+                    }
+                }
+                else
+                {
+                    match = false;
+                }
+            }
+            catch
+            {
+                match = false;
+            }
+
+            return match;
+        }
+
+        /// <summary>
+        /// Checks whether the search pattern is included in the directory name.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <returns>The search pattern is included in the directory name=true, otherwise=false.</returns>
+        private bool SearchPatternDirectory(string directoryName, string searchPattern)
+        {
+            string tempDirectoryName = "";
+            string tempPattern = "";
+            string tempPattern1 = "";
+            bool match = false;
+            try
+            {
+                if (searchPattern == "")
+                {
+                    match = true;
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.EndsWith("*"))
+                {
+                    //Nach Teilstück suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.Contains(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.EndsWith("*"))
+                {
+                    //Nach Anfang Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.StartsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*"))
+                {
+                    //Nach Ende Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.EndsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.Contains("*"))
+                {
+                    //Nach Anfang und Ende Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Remove(searchPattern.IndexOf("*"));
+                    tempPattern1 = searchPattern.Remove(0, searchPattern.IndexOf("*") + 1);
+
+                    if (tempDirectoryName.StartsWith(tempPattern) & tempDirectoryName.EndsWith(tempPattern1))
+                    {
+                        match = true;
+                    }
+                }
+                else
+                {
+                    match = false;
+                }
+            }
+            catch
+            {
+                match = false;
+            }
+
+            return match;
+        }
+
+        /// <summary>
+        /// Checks how old the file is.
+        /// </summary>
+        /// <param name="fileName">A valid file or directory name.</param>
+        /// <param name="daysOld">Days how old the element must be. 0=All.</param>
+        /// <returns>True=Is older as 'daysOld', otherwies=false.</returns>
+        private bool DaysOld(string fileName, int daysOld)
+        {
+            int calcDays = 0;
+            bool ok = false;
+
+            if (daysOld <= 0)
+            {
+                ok = true;
+            }
+            else
+            {
+                try
+                {
+                    //Das Alter (letzter Zugriff) der Datei errechnen
+                    DateTime dt = System.IO.File.GetLastAccessTime(fileName);
+                    TimeSpan sp = DateTime.Now - dt;
+                    calcDays = sp.Days;
+
+                    if (calcDays > daysOld)
+                    {
+                        //Wenn die Datei älter als 'daysOld'-Tage ist
+                        ok = true;
+                    }
+                }
+                catch
+                {
+                    ok = false;
+                }
+            }
+
+            return ok;
+        }
+        #endregion
+
+        #region Event Handler
+        // Der Delegat muß die gleiche Signatur aufweisen wie die Eventhandler-Methode.
+        public delegate void EventDelegate(int result, string status);
+
+        // Das Event-Objekt ist vom Typ dieses Delegaten.
+        public event EventDelegate DelStatus;
+
+        public void OnEvent(int result, string status)
+        {
+            // Prüft ob das Event überhaupt einen Abonnenten hat.
+            if (DelStatus != null)
+            {
+                DelStatus(result, status);
+            }
+        }
+        #endregion
+    }
+}

Test_Delete/Delete.cs

@@ -0,0 +1,754 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Eugen.IO
+{
+    /// <summary>
+    /// Deletes files and/or directories
+    /// </summary>
+    class Delete
+    {
+        #region Variablen
+        List<string> undeletableFiles = new List<string>(); //Liste der unlöschbaren Dateien
+        List<string> undeletableDirectories = new List<string>(); //Liste der unlöschbaren Verzeichnisse
+
+        public static long FileCounter { set; get; } //Anzahl der abgearbeiteten Dateien
+        public static long DirectoryCounter { set; get; } //Anzahl der abgearbeiteten Verzeichnisse
+
+        public static long NumberOfFiles { set; get; } //Anzahl der Dateien
+        public static long NumberOfDirectories { set; get; } //Anzahl der Verzeichnisse
+
+        public static List<string> UndeletableFiles { set; get; } //Liste aller unlöschbaren Dateien
+        public static List<string> UndeletableDirectories { set; get; } //Liste aller unlöschbaren Verzeichnisse
+
+        public static int PercentDone { set; get; } //Prozent abgeschlossen
+        public static string Status { set; get; } //Zeigt an welche Datei gerade gelöscht wird
+        #endregion
+
+        #region Konstruktor
+        /// <summary>
+        /// Delete files or directories in a directory.
+        /// </summary>
+        public Delete()
+        {
+            UndeletableFiles = undeletableFiles;
+            UndeletableDirectories = undeletableDirectories;
+        }
+        #endregion
+
+        #region File
+        /// <summary>
+        /// Deletes a singel file.
+        /// </summary>
+        /// <param name="fileName">A valid filename with path.</param>
+        /// <returns></returns>
+        public string File(string fileName)
+        {
+            //Löscht eine Datei
+            try
+            {
+                //Wert für ProgressBar berechnen
+                FileCounter++; //Zähler hochzählen
+                if ((NumberOfFiles + NumberOfDirectories) == 0)
+                {
+                    PercentDone = 0;
+                }
+                else
+                {
+                    PercentDone = Convert.ToInt32(100 / Convert.ToDouble(NumberOfFiles + NumberOfDirectories) * Convert.ToDouble(FileCounter + DirectoryCounter));
+                }
+                if (PercentDone > 100)
+                {
+                    PercentDone = 100; //Auf max 100% begrenzen
+                }
+                Status = String.Concat("Delete ", fileName);
+                OnEvent(PercentDone, Status);
+
+                System.IO.File.SetAttributes(fileName, FileAttributes.Normal); //Attribute zurücksetzen
+                System.IO.File.Delete(fileName); //Datei löschen
+
+                return null; //Wenn löschen möglich war
+            }
+            catch (Exception)
+            {
+                UndeletableFiles.Add(fileName); //Dateiname in die Liste der unlöschbaren Dateien aufnehmen
+                return fileName; //Wenn löschen nicht möglich war
+            }
+        }
+
+        /// <summary>
+        /// Deletes a file in a directory that correspond to a particular pattern sequence.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <returns>If the file was successfully deleted, 'null' is returned, otherwise the filename.</returns>
+        public List<string> File(string directoryName, string searchPattern)
+        {
+            //Löscht alle Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableFiles = new List<string>(); //Liste der unlöschbaren Dateien
+            string tempUndelFile = null;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern))
+                    {
+                        //Wenn Datei dem Suchpattern entspricht, dann löschen
+                        tempUndelFile = File(fileName);
+                    }
+
+                    //Wenn ein Dateiname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelFile != null)
+                    {
+                        undeletableFiles.Add(tempUndelFile);
+                        tempUndelFile = null; //Variable wieder zurücksetzen
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableFiles;
+        }
+
+        /// <summary>
+        /// Deletes a file in a directory that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <param name="daysOld">Days the file must be old. 0=All files are counted.</param>
+        /// <returns>If the file was successfully deleted, 'null' is returned, otherwise the filename.</returns>
+        public List<string> File(string directoryName, string searchPattern, int daysOld)
+        {
+            //Löscht alle Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableFiles = new List<string>(); //Liste der unlöschbaren Dateien
+            string tempUndelFile = null;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern) && DaysOld(fileName, daysOld))
+                    {
+                        //Wenn Datei dem Suchpattern entspricht, dann löschen
+                        tempUndelFile = File(fileName);
+                    }
+
+                    //Wenn ein Dateiname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelFile != null)
+                    {
+                        undeletableFiles.Add(tempUndelFile);
+                        tempUndelFile = null; //Variable wieder zurücksetzen
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableFiles;
+        }
+
+        /// <summary>
+        /// Deletes a file in a directory and all subdirectories that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <param name="daysOld">Days the file must be old. 0=All files are counted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <returns>If the file was successfully deleted, 'null' is returned, otherwise the filename.</returns>
+        public List<string> File(string directoryName, string searchPattern, int daysOld, bool recursive)
+        {
+            //Löscht alle Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", ".txt", "*.txt", "*xyz*", "Xyz*", "*xyz", "wx*yz"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableFiles = new List<string>(); //Liste der unlöschbaren Dateien
+            List<string> tempUndeletableFiles = new List<string>();
+            string tempUndelFile = null;
+
+            try
+            {
+                foreach (string fileName in System.IO.Directory.GetFiles(directoryName))
+                {
+                    if (SearchPatternFile(fileName, searchPattern) && DaysOld(fileName, daysOld))
+                    {
+                        //Wenn Datei dem Suchpattern entspricht, dann löschen
+                        tempUndelFile = File(fileName);
+                    }
+
+                    //Wenn ein Dateiname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelFile != null)
+                    {
+                        undeletableFiles.Add(tempUndelFile);
+                        tempUndelFile = null; //Variable wieder zurücksetzen
+                    }
+                }
+
+                if (recursive)
+                {
+                    foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                    {
+                        tempUndeletableFiles = File(dirName, searchPattern, daysOld, recursive);
+
+                        if (tempUndeletableFiles.Count != 0)
+                        {
+                            undeletableFiles.AddRange(tempUndeletableFiles); //Unlöschbare Dateien zur Liste hinzufügen
+                            tempUndeletableFiles.Clear(); //Liste wieder leeren
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableFiles;
+        }
+        #endregion
+
+        #region Directory
+        /// <summary>
+        /// Deletes the spicified directory. It is not checked whether subdirectories are included.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <returns>If the directory was successfully deleted, 'null' is returned, otherwise the directoryname.</returns>
+        public string Directory(string directoryName)
+        {
+            //Löscht das angegebene Verzeichnis
+            try
+            {
+                //Wert für ProgressBar berechnen
+                DirectoryCounter++; //Zähler hochzählen
+                if ((NumberOfFiles + NumberOfDirectories) == 0)
+                {
+                    PercentDone = 0;
+                }
+                else
+                {
+                    PercentDone = Convert.ToInt32(100 / Convert.ToDouble(NumberOfFiles + NumberOfDirectories) * Convert.ToDouble(FileCounter + DirectoryCounter));
+                }
+                if (PercentDone > 100)
+                {
+                    PercentDone = 100; //Auf max 100% begrenzen
+                }
+                Status = String.Concat("Delete ", directoryName);
+                OnEvent(PercentDone, Status);
+
+                if (System.IO.Directory.Exists(directoryName))
+                {
+                    //Damit das Verzeichnis gelöscht werden kann, erst alle Dateien löschen
+                    File(directoryName, "");
+
+                    //Schreibschutz aufheben
+                    DirectoryInfo dirInfo = new DirectoryInfo(directoryName);
+                    dirInfo.Attributes = FileAttributes.Normal;
+
+                    System.IO.Directory.Delete(directoryName, false);
+                }
+
+                return null;
+            }
+            catch
+            {
+                UndeletableDirectories.Add(directoryName); //Verzeichnis in die Liste der unlöschbaren Verzeichnisse aufnehmen
+                return directoryName; //Wenn löschen nicht möglich war
+            }
+        }
+
+        /// <summary>
+        /// Deletes all directories in a directory that correspond to a particular pattern sequence.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "xyz*", "*xyz", "wx*yz", "*xyz*". ""=All files.</param>
+        /// <returns>If the directory was successfully deleted, 'null' is returned, otherwise the directoryname.</returns>
+        public List<string> Directory(string directoryName, string searchPattern)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableDirectories = new List<string>(); //Liste der unlöschbaren Verzeichnisse
+            string tempUndelDirectory = null;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern))
+                    {
+                        //Wenn Verzeichnis dem Suchpattern entspricht, dann löschen
+                        tempUndelDirectory = Directory(dirName);
+                    }
+
+                    //Wenn ein Verzeichnsname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelDirectory != null)
+                    {
+                        undeletableDirectories.Add(tempUndelDirectory);
+                        tempUndelDirectory = null; //Variable wieder zurücksetzen
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableDirectories;
+        }
+
+        /// <summary>
+        /// Deletes all directories in a directory that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "xyz*", "*xyz", "wx*yz", "*xyz*". ""=All files.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All directories are deleted.</param>
+        /// <returns>If the directory was successfully deleted, 'null' is returned, otherwise the directoryname.</returns>
+        public List<string> Directory(string directoryName, string searchPattern, int daysOld)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableDirectories = new List<string>(); //Liste der unlöschbaren Verzeichnisse
+            string tempUndelDirectory = null;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern) && DaysOld(dirName, daysOld))
+                    {
+                        //Wenn Verzeichnis dem Suchpattern entspricht, dann löschen
+                        tempUndelDirectory = Directory(dirName);
+                    }
+
+                    //Wenn ein Verzeichnsname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelDirectory != null)
+                    {
+                        undeletableDirectories.Add(tempUndelDirectory);
+                        tempUndelDirectory = null; //Variable wieder zurücksetzen
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableDirectories;
+        }
+
+        /// <summary>
+        /// Deletes all directories in a directory and all subdirectories that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "xyz*", "*xyz", "wx*yz", "*xyz*". ""=All files.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All directories are deleted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <returns></returns>
+        public List<string> Directory(string directoryName, string searchPattern, int daysOld, bool recursive)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen
+            //die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableDirectories = new List<string>(); //Liste der unlöschbaren Verzeichnisse
+            List<string> tempUndeletableDirectories = new List<string>();
+            string tempUndelDirectory = null;
+
+            try
+            {
+                foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                {
+                    if (SearchPatternDirectory(dirName, searchPattern) && DaysOld(dirName, daysOld))
+                    {
+                        //Wenn Verzeichnis dem Suchpattern entspricht, dann löschen
+                        tempUndelDirectory = Directory(dirName);
+                    }
+
+                    //Wenn ein Verzeichnsname zurückgeliefert wird, dann in die Liste aufnehmen
+                    if (tempUndelDirectory != null)
+                    {
+                        undeletableDirectories.Add(tempUndelDirectory);
+                        tempUndelDirectory = null; //Variable wieder zurücksetzen
+                    }
+                }
+
+                if (recursive)
+                {
+                    foreach (string dirName in System.IO.Directory.GetDirectories(directoryName))
+                    {
+                        tempUndeletableDirectories = Directory(dirName, searchPattern, daysOld, recursive);
+
+                        if (tempUndeletableDirectories.Count != 0)
+                        {
+                            undeletableDirectories.AddRange(tempUndeletableDirectories); //Unlöschbare Verzeichnisse zur Liste hinzufügen
+                            tempUndeletableDirectories.Clear(); //Liste wieder leeren
+                        }
+                    }
+                }
+            }
+            catch
+            {
+                //Nichts tun, weil nicht notwendig
+            }
+
+            return undeletableDirectories;
+        }
+
+        /// <summary>
+        /// Deletes all directories in a directory and all subdirectories and the directory itself that correspond to a particular pattern sequence and older than 'n'-days.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "xyz*", "*xyz", "wx*yz", "*xyz*". ""=All files.</param>
+        /// <param name="daysOld">Days the directory must be old. 0=All directories are deleted.</param>
+        /// <param name="recursive">True=Search in all sudirectories recursive. False=Search only in root directory.</param>
+        /// <param name="deleteItself">True=Delete also the root directory itself, False=Delete not the root directory itself.</param>
+        /// <returns></returns>
+        public List<string> Directory(string directoryName, string searchPattern, int daysOld, bool recursive, bool deleteItself)
+        {
+            //Löscht alle Verzeichnisse und Dateien im angegebenen Verzeichnis und allen Unterverzeichnissen
+            //die dem Suchkriterium entsprechen und älter als n-Tage sind
+            //Gültige Suchpattern: "", "xyz*", "*xyz", "wx*yz", "*xyz*"
+            //Groß-/Kleinschreibung wird ignoriert
+
+            List<string> undeletableDirectories = new List<string>(); //Liste der unlöschbaren Verzeichnisse
+            List<string> tempUndeletableDirectories = new List<string>();
+            string tempUndelDirectory = null;
+
+            tempUndeletableDirectories = Directory(directoryName, searchPattern, daysOld, recursive);
+
+            if (tempUndeletableDirectories.Count != 0)
+            {
+                undeletableDirectories.AddRange(tempUndeletableDirectories); //Unlöschbare Verzeichnisse zur Liste hinzufügen
+                tempUndeletableDirectories.Clear(); //Liste wieder leeren
+            }
+
+            if (deleteItself)
+            {
+                if (SearchPatternDirectory(directoryName, searchPattern) && DaysOld(directoryName, daysOld))
+                {
+                    //Wenn Verzeichnis dem Suchpattern entspricht, dann löschen
+                    tempUndelDirectory = Directory(directoryName);
+                }
+
+                if (tempUndelDirectory != null)
+                {
+                    undeletableDirectories.Add(tempUndelDirectory); //Unlöschbares Verzeichnis zur Liste hinzufügen
+                    tempUndelDirectory = null; //Zurücksetzen
+                }
+            }
+
+            return undeletableDirectories;
+        }
+        #endregion
+
+        #region Reset Counters
+        /// <summary>
+        /// Resets the file counter to 0.
+        /// </summary>
+        public static void ResetFileCounter()
+        {
+            FileCounter = 0;
+        }
+
+        /// <summary>
+        /// Resets the directory counter to 0.
+        /// </summary>
+        public static void ResetDirectoryCounter()
+        {
+            DirectoryCounter = 0;
+        }
+
+        /// <summary>
+        /// Resets the number of files to 0.
+        /// </summary>
+        public static void ResetNumberOfFiles()
+        {
+            NumberOfFiles = 0;
+        }
+
+        /// <summary>
+        /// Resets the number of directories to 0.
+        /// </summary>
+        public static void ResetNumberOfDirectories()
+        {
+            NumberOfDirectories = 0;
+        }
+        #endregion
+
+        #region Clear
+        /// <summary>
+        /// Clears the undeletabele file list.
+        /// </summary>
+        public void ClearUndeletableFiles()
+        {
+            UndeletableFiles.Clear();
+        }
+
+        /// <summary>
+        /// Clears the undeletabele directory list.
+        /// </summary>
+        public void ClearUndeletableDirectories()
+        {
+            UndeletableDirectories.Clear();
+        }
+        #endregion
+
+        #region Subroutines
+        /// <summary>
+        /// Checks whether the search pattern is included in the file name.
+        /// </summary>
+        /// <param name="fileName">A valid file name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", ".ext", "*.ext", "*xyz.ext", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All files.</param>
+        /// <returns>The search pattern is included in the file name=true, otherwise=false.</returns>
+        private bool SearchPatternFile(string fileName, string searchPattern)
+        {
+            string tempFileName = "";
+            string tempExtension = "";
+            string tempPattern = "";
+            string tempPattern1 = "";
+            bool match = false;
+            try
+            {
+                if (searchPattern == "")
+                {
+                    match = true;
+                }
+                else if (searchPattern.StartsWith(".") | searchPattern.StartsWith("*."))
+                {
+                    //Wenn mit '*', dann '*' entfernen
+                    if (searchPattern.StartsWith("*"))
+                    {
+                        searchPattern = searchPattern.Replace("*", "");
+                    }
+
+                    //Nach Datei Erweiterung suchen
+                    if (Path.GetExtension(fileName).ToLower() == searchPattern.ToLower())
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.EndsWith("*"))
+                {
+                    //Nach Teilstück suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.Contains(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.EndsWith("*"))
+                {
+                    //Nach Anfang Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.StartsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.Contains("."))
+                {
+                    //Nach Teilstück suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+                    tempPattern = tempPattern.Remove(tempPattern.IndexOf("."));
+                    tempExtension = Path.GetExtension(fileName).ToLower();
+                    string test = searchPattern.Remove(0, searchPattern.IndexOf("."));
+
+                    if (tempFileName.EndsWith(tempPattern) & searchPattern.Remove(0, searchPattern.IndexOf(".")) == tempExtension)
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*"))
+                {
+                    //Nach Ende Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempFileName.EndsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.Contains("*"))
+                {
+                    //Nach Anfang und Ende Suchen
+                    tempFileName = Path.GetFileNameWithoutExtension(fileName).ToLower();
+                    tempPattern = searchPattern.Remove(searchPattern.IndexOf("*"));
+                    tempPattern1 = searchPattern.Remove(0, searchPattern.IndexOf("*") + 1);
+
+                    if (tempFileName.StartsWith(tempPattern) & tempFileName.EndsWith(tempPattern1))
+                    {
+                        match = true;
+                    }
+                }
+                else
+                {
+                    match = false;
+                }
+            }
+            catch
+            {
+                match = false;
+            }
+
+            return match;
+        }
+
+        /// <summary>
+        /// Checks whether the search pattern is included in the directory name.
+        /// </summary>
+        /// <param name="directoryName">A valid directory name.</param>
+        /// <param name="searchPattern">Valid pattern sequence: "", "*xyz*"; "Xyz*", "*xyz", "wx*yz". ""=All directories.</param>
+        /// <returns>The search pattern is included in the directory name=true, otherwise=false.</returns>
+        private bool SearchPatternDirectory(string directoryName, string searchPattern)
+        {
+            string tempDirectoryName = "";
+            string tempPattern = "";
+            string tempPattern1 = "";
+            bool match = false;
+            try
+            {
+                if (searchPattern == "")
+                {
+                    match = true;
+                }
+                else if (searchPattern.StartsWith("*") & searchPattern.EndsWith("*"))
+                {
+                    //Nach Teilstück suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.Contains(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.EndsWith("*"))
+                {
+                    //Nach Anfang Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.StartsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.StartsWith("*"))
+                {
+                    //Nach Ende Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Replace("*", "").ToLower();
+
+                    if (tempDirectoryName.EndsWith(tempPattern))
+                    {
+                        match = true;
+                    }
+                }
+                else if (searchPattern.Contains("*"))
+                {
+                    //Nach Anfang und Ende Suchen
+                    tempDirectoryName = Path.GetFileNameWithoutExtension(directoryName).ToLower();
+                    tempPattern = searchPattern.Remove(searchPattern.IndexOf("*"));
+                    tempPattern1 = searchPattern.Remove(0, searchPattern.IndexOf("*") + 1);
+
+                    if (tempDirectoryName.StartsWith(tempPattern) & tempDirectoryName.EndsWith(tempPattern1))
+                    {
+                        match = true;
+                    }
+                }
+                else
+                {
+                    match = false;
+                }
+            }
+            catch
+            {
+                match = false;
+            }
+
+            return match;
+        }
+
+        /// <summary>
+        /// Checks how old the file is.
+        /// </summary>
+        /// <param name="fileName">A valid file name.</param>
+        /// <param name="daysOld">Days how old the element must be. 0=All.</param>
+        /// <returns>True=Is older as 'daysOld', otherwies=false.</returns>
+        private bool DaysOld(string fileName, int daysOld)
+        {
+            int calcDays = 0;
+            bool ok = false;
+
+            if (daysOld <= 0)
+            {
+                ok = true;
+            }
+            else
+            {
+                try
+                {
+                    //Das Alter (letzter Zugriff) der Datei errechnen
+                    DateTime dt = System.IO.File.GetLastAccessTime(fileName);
+                    TimeSpan sp = DateTime.Now - dt;
+                    calcDays = sp.Days;
+
+                    if (calcDays > daysOld)
+                    {
+                        //Wenn die Datei älter als 'daysOld'-Tage ist
+                        ok = true;
+                    }
+                }
+                catch
+                {
+                    ok = false;
+                }
+            }
+
+            return ok;
+        }
+        #endregion
+
+        #region Event Handler
+        // Der Delegat muß die gleiche Signatur aufweisen wie die Eventhandler-Methode.
+        public delegate void EventDelegate(int result, string status);
+
+        // Das Event-Objekt ist vom Typ dieses Delegaten.
+        public event EventDelegate DelStatus;
+
+        public void OnEvent(int result, string status)
+        {
+            // Prüft ob das Event überhaupt einen Abonnenten hat.
+            if (DelStatus != null)
+            {
+                DelStatus(result, status);
+            }
+        }
+        #endregion
+    }
+}

Test_Delete/Form1.Designer.cs

@@ -0,0 +1,74 @@
+namespace Test_Delete
+{
+    partial class Form1
+    {
+        /// <summary>
+        /// Erforderliche Designervariable.
+        /// </summary>
+        private System.ComponentModel.IContainer components = null;
+
+        /// <summary>
+        /// Verwendete Ressourcen bereinigen.
+        /// </summary>
+        /// <param name="disposing">True, wenn verwaltete Ressourcen gelöscht werden sollen; andernfalls False.</param>
+        protected override void Dispose(bool disposing)
+        {
+            if (disposing && (components != null))
+            {
+                components.Dispose();
+            }
+            base.Dispose(disposing);
+        }
+
+        #region Vom Windows Form-Designer generierter Code
+
+        /// <summary>
+        /// Erforderliche Methode für die Designerunterstützung.
+        /// Der Inhalt der Methode darf nicht mit dem Code-Editor geändert werden.
+        /// </summary>
+        private void InitializeComponent()
+        {
+            this.buttonStart = new System.Windows.Forms.Button();
+            this.labelNumber = new System.Windows.Forms.Label();
+            this.SuspendLayout();
+            // 
+            // buttonStart
+            // 
+            this.buttonStart.Location = new System.Drawing.Point(13, 234);
+            this.buttonStart.Name = "buttonStart";
+            this.buttonStart.Size = new System.Drawing.Size(75, 23);
+            this.buttonStart.TabIndex = 0;
+            this.buttonStart.Text = "Start";
+            this.buttonStart.UseVisualStyleBackColor = true;
+            this.buttonStart.Click += new System.EventHandler(this.buttonStart_Click);
+            // 
+            // labelNumber
+            // 
+            this.labelNumber.AutoSize = true;
+            this.labelNumber.Location = new System.Drawing.Point(13, 13);
+            this.labelNumber.Name = "labelNumber";
+            this.labelNumber.Size = new System.Drawing.Size(16, 13);
+            this.labelNumber.TabIndex = 1;
+            this.labelNumber.Text = "...";
+            // 
+            // Form1
+            // 
+            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
+            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
+            this.ClientSize = new System.Drawing.Size(292, 269);
+            this.Controls.Add(this.labelNumber);
+            this.Controls.Add(this.buttonStart);
+            this.Name = "Form1";
+            this.Text = "Form1";
+            this.ResumeLayout(false);
+            this.PerformLayout();
+
+        }
+
+        #endregion
+
+        private System.Windows.Forms.Button buttonStart;
+        private System.Windows.Forms.Label labelNumber;
+    }
+}
+

Test_Delete/Form1.cs

@@ -0,0 +1,67 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Data;
+using System.Drawing;
+using System.IO;
+using System.Linq;
+using System.Reflection;
+using System.Text;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+using Eugen.IO;
+
+namespace Test_Delete
+{
+    public partial class Form1 : Form
+    {
+        #region Version und Copyright
+        // Version und Copyright
+        string programName = Path.GetFileNameWithoutExtension(System.Reflection.Assembly.GetExecutingAssembly().GetName().CodeBase); // Den Programmnamen auslesen
+        string version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version.ToString(); // Die Programmversion auslesen
+        static object[] attributes = Assembly.GetExecutingAssembly().GetCustomAttributes(typeof(AssemblyCopyrightAttribute), false);
+        string copyright = ((AssemblyCopyrightAttribute)attributes[0]).Copyright;
+        string icon = Application.StartupPath + "\\Info.bmp";
+        // Assembly Datum und Zeit
+        static DateTime value = AssemblyDateTime();
+        string date = value.ToShortDateString();
+        string time = value.ToLongTimeString();
+        // Programmversion berechnen
+        private static DateTime AssemblyDateTime()
+        {
+            var version = System.Reflection.Assembly.GetExecutingAssembly().GetName().Version;
+            var buildDateTime = new DateTime(2000, 1, 1).Add(new TimeSpan(TimeSpan.TicksPerDay * version.Build + TimeSpan.TicksPerSecond * 2 * version.Revision));
+            // Tage seit dem 1. Januar 2000 und Sekunden seit Mitternacht, (multiplizier mit 2 ergibt das Original)
+            return buildDateTime;
+        }
+        #endregion
+
+        public Form1()
+        {
+            InitializeComponent();
+        }
+
+        private void buttonStart_Click(object sender, EventArgs e)
+        {
+            //TODO: Hier geht es los
+            List<string> undelFile = new List<string>();
+            string undelDir = "";
+            List<string> undelDirs = new List<string>();
+            string fileName = "C:\\temp\\test.txt";
+            //			string folderName = "C:\\temp";
+            string folderName = "C:\\temp\\Test";
+
+            Count count = new Count();
+
+            Delete.NumberOfFiles = count.File(folderName, "", 0, true);
+            Delete.NumberOfDirectories = count.Directory(folderName, "", 0, true, true);
+            labelNumber.Text = Delete.NumberOfFiles.ToString() + " Dateien\n" + Delete.NumberOfDirectories.ToString() + " Verzeichnisse";
+            labelNumber.Refresh();
+
+            Delete del = new Delete();
+
+            //			undelFile = del.File(folderName, "", 0, true);
+            undelDir = del.Directory(folderName);
+        }
+    }
+}

Test_Delete/Form1.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Test_Delete/Program.cs

@@ -0,0 +1,22 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using System.Windows.Forms;
+
+namespace Test_Delete
+{
+    static class Program
+    {
+        /// <summary>
+        /// Der Haupteinstiegspunkt für die Anwendung.
+        /// </summary>
+        [STAThread]
+        static void Main()
+        {
+            Application.EnableVisualStyles();
+            Application.SetCompatibleTextRenderingDefault(false);
+            Application.Run(new Form1());
+        }
+    }
+}

Test_Delete/Properties/AssemblyInfo.cs

@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// Allgemeine Informationen über eine Assembly werden über die folgenden
+// Attribute gesteuert. Ändern Sie diese Attributwerte, um die Informationen zu ändern,
+// die einer Assembly zugeordnet sind.
+[assembly: AssemblyTitle("Test_Delete")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("Test_Delete")]
+[assembly: AssemblyCopyright("Copyright ©  2017")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Durch Festlegen von ComVisible auf FALSE werden die Typen in dieser Assembly
+// für COM-Komponenten unsichtbar.  Wenn Sie auf einen Typ in dieser Assembly von
+// COM aus zugreifen müssen, sollten Sie das ComVisible-Attribut für diesen Typ auf "True" festlegen.
+[assembly: ComVisible(false)]
+
+// Die folgende GUID bestimmt die ID der Typbibliothek, wenn dieses Projekt für COM verfügbar gemacht wird
+[assembly: Guid("ee2ccb92-eabe-412d-97bb-6bf7a1077413")]
+
+// Versionsinformationen für eine Assembly bestehen aus den folgenden vier Werten:
+//
+//      Hauptversion
+//      Nebenversion
+//      Buildnummer
+//      Revision
+//
+// Sie können alle Werte angeben oder Standardwerte für die Build- und Revisionsnummern verwenden,
+// übernehmen, indem Sie "*" eingeben:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.*")]
+// [assembly: AssemblyFileVersion("1.0.0.0")]

Test_Delete/Properties/Resources.Designer.cs

@@ -0,0 +1,71 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     Dieser Code wurde von einem Tool generiert.
+//     Laufzeitversion: 4.0.30319.42000
+//
+//     Änderungen an dieser Datei können fehlerhaftes Verhalten verursachen und gehen verloren, wenn
+//     der Code neu generiert wird.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Test_Delete.Properties
+{
+
+
+    /// <summary>
+    ///   Eine stark typisierte Ressourcenklasse zum Suchen von lokalisierten Zeichenfolgen usw.
+    /// </summary>
+    // Diese Klasse wurde von der StronglyTypedResourceBuilder-Klasse
+    // über ein Tool wie ResGen oder Visual Studio automatisch generiert.
+    // Um einen Member hinzuzufügen oder zu entfernen, bearbeiten Sie die .ResX-Datei und führen dann ResGen
+    // mit der Option /str erneut aus, oder erstellen Sie Ihr VS-Projekt neu.
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("System.Resources.Tools.StronglyTypedResourceBuilder", "4.0.0.0")]
+    [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    internal class Resources
+    {
+
+        private static global::System.Resources.ResourceManager resourceMan;
+
+        private static global::System.Globalization.CultureInfo resourceCulture;
+
+        [global::System.Diagnostics.CodeAnalysis.SuppressMessageAttribute("Microsoft.Performance", "CA1811:AvoidUncalledPrivateCode")]
+        internal Resources()
+        {
+        }
+
+        /// <summary>
+        ///   Gibt die zwischengespeicherte ResourceManager-Instanz zurück, die von dieser Klasse verwendet wird.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Resources.ResourceManager ResourceManager
+        {
+            get
+            {
+                if ((resourceMan == null))
+                {
+                    global::System.Resources.ResourceManager temp = new global::System.Resources.ResourceManager("Test_Delete.Properties.Resources", typeof(Resources).Assembly);
+                    resourceMan = temp;
+                }
+                return resourceMan;
+            }
+        }
+
+        /// <summary>
+        ///   Überschreibt die CurrentUICulture-Eigenschaft des aktuellen Threads für alle
+        ///   Ressourcenlookups, die diese stark typisierte Ressourcenklasse verwenden.
+        /// </summary>
+        [global::System.ComponentModel.EditorBrowsableAttribute(global::System.ComponentModel.EditorBrowsableState.Advanced)]
+        internal static global::System.Globalization.CultureInfo Culture
+        {
+            get
+            {
+                return resourceCulture;
+            }
+            set
+            {
+                resourceCulture = value;
+            }
+        }
+    }
+}

Test_Delete/Properties/Resources.resx

@@ -0,0 +1,117 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

Test_Delete/Properties/Settings.Designer.cs

@@ -0,0 +1,30 @@
+//------------------------------------------------------------------------------
+// <auto-generated>
+//     This code was generated by a tool.
+//     Runtime Version:4.0.30319.42000
+//
+//     Changes to this file may cause incorrect behavior and will be lost if
+//     the code is regenerated.
+// </auto-generated>
+//------------------------------------------------------------------------------
+
+namespace Test_Delete.Properties
+{
+
+
+    [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "11.0.0.0")]
+    internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase
+    {
+
+        private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
+
+        public static Settings Default
+        {
+            get
+            {
+                return defaultInstance;
+            }
+        }
+    }
+}

Test_Delete/Properties/Settings.settings

@@ -0,0 +1,7 @@
+<?xml version='1.0' encoding='utf-8'?>
+<SettingsFile xmlns="http://schemas.microsoft.com/VisualStudio/2004/01/settings" CurrentProfile="(Default)">
+  <Profiles>
+    <Profile Name="(Default)" />
+  </Profiles>
+  <Settings />
+</SettingsFile>

Test_Delete/Test_Delete.csproj

@@ -0,0 +1,84 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{EE2CCB92-EABE-412D-97BB-6BF7A1077413}</ProjectGuid>
+    <OutputType>WinExe</OutputType>
+    <RootNamespace>Test_Delete</RootNamespace>
+    <AssemblyName>Test_Delete</AssemblyName>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Deployment" />
+    <Reference Include="System.Drawing" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Windows.Forms" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Count.cs" />
+    <Compile Include="Delete.cs" />
+    <Compile Include="Form1.cs">
+      <SubType>Form</SubType>
+    </Compile>
+    <Compile Include="Form1.Designer.cs">
+      <DependentUpon>Form1.cs</DependentUpon>
+    </Compile>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+    <EmbeddedResource Include="Form1.resx">
+      <DependentUpon>Form1.cs</DependentUpon>
+    </EmbeddedResource>
+    <EmbeddedResource Include="Properties\Resources.resx">
+      <Generator>ResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.cs</LastGenOutput>
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
+    <Compile Include="Properties\Resources.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <None Include="Properties\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <LastGenOutput>Settings.Designer.cs</LastGenOutput>
+    </None>
+    <Compile Include="Properties\Settings.Designer.cs">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+</Project>