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FileInfo.Delete Method

Permanently deletes a file.

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)

public override void Delete ()
public void Delete ()
public override function Delete ()
Not applicable.

Exception typeCondition

IOException

The target file is open or memory-mapped on a computer running Microsoft Windows NT.

SecurityException

The caller does not have the required permission.

UnauthorizedAccessException

The path is a directory.

If the file does not exist, this method does nothing.

For a list of common I/O tasks, see Common I/O Tasks.

Windows NT 4.0 Platform Note: Delete does not delete a file that is open for normal I/O or a file that is memory-mapped.

The following example demonstrates the Delete method.

using System;
using System.IO;

class Test 
{
	
    public static void Main() 
    {
        string path = @"c:\MyTest.txt";
        FileInfo fi1 = new FileInfo(path);

        try 
        {
            using (StreamWriter sw = fi1.CreateText()) {}
            string path2 = path + "temp";
            FileInfo fi2 = new FileInfo(path2);

            //Ensure that the target does not exist.
            fi2.Delete();

            //Copy the file.
            fi1.CopyTo(path2);
            Console.WriteLine("{0} was copied to {1}.", path, path2);

            //Delete the newly created file.
            fi2.Delete();
            Console.WriteLine("{0} was successfully deleted.", path2);

        } 
        catch (Exception e) 
        {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    }
}
//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//c:\MyTest.txt was copied to c:\MyTest.txttemp.
//c:\MyTest.txttemp was successfully deleted.

import System.*;
import System.IO.*;

class Test
{
    public static void main(String[] args)
    {
        String path = "c:\\MyTest.txt";
        FileInfo fi1 = new FileInfo(path);

        try {
            StreamWriter sw = fi1.CreateText();

            try {
            }
            finally {
                sw.Dispose();
            }

            String path2 = path + "temp";
            FileInfo fi2 = new FileInfo(path2);

            //Ensure that the target does not exist.
            fi2.Delete();

            //Copy the file.
            fi1.CopyTo(path2);
            Console.WriteLine("{0} was copied to {1}.", path, path2);

            //Delete the newly created file.
            fi2.Delete();
            Console.WriteLine("{0} was successfully deleted.", path2);
        }
        catch (System.Exception e) {
            Console.WriteLine("The process failed: {0}", e.ToString());
        }
    } //main
} //Test
//This code produces output similar to the following; 
//results may vary based on the computer/file structure/etc.:
//
//c:\MyTest.txt was copied to c:\MyTest.txttemp.
//c:\MyTest.txttemp was successfully deleted.

The following example creates, closes, and deletes a file.

using System;
using System.IO;

public class DeleteTest 
{
    public static void Main() 
    {
        // Create a reference to a file.
        FileInfo fi = new FileInfo("temp.txt");
        // Actually create the file.
        FileStream fs = fi.Create();
        // Modify the file as required, and then close the file.
        fs.Close();
        // Delete the file.
        fi.Delete();
    }
}

import System.*;
import System.IO.*;

public class DeleteTest
{
    public static void main(String[] args)
    {
        // Create a reference to a file.
        FileInfo fi = new FileInfo("temp.txt");

        // Actually create the file.
        FileStream fs = fi.Create();

        // Modify the file as required, and then close the file.
        fs.Close();

        // Delete the file.
        fi.Delete();
    } //main
} //DeleteTest

import System;
import System.IO;

public class DeleteTest {
    public static function Main() : void {
        // Create a reference to a file.
        var fi : FileInfo = new FileInfo("temp.txt");
        // Actually create the file.
        var fs : FileStream = fi.Create();
        // Modify the file as required, and then close the file.
        fs.Close();
        // Delete the file.
        fi.Delete();
    }
}
DeleteTest.Main();

Windows 98, Windows Server 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0

XNA Framework

Supported in: 1.0

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