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Directory.SetCurrentDirectory Method

Sets the application's current working directory to the specified directory.

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

public static void SetCurrentDirectory (
	string path
)
public static void SetCurrentDirectory (
	String path
)
public static function SetCurrentDirectory (
	path : String
)

Parameters

path

The path to which the current working directory is set.

Exception typeCondition

IOException

An IO error occurred.

ArgumentException

path is a zero-length string, contains only white space, or contains one or more invalid characters as defined by InvalidPathChars.

ArgumentNullException

path is a null reference (Nothing in Visual Basic).

PathTooLongException

The specified path, file name, or both exceed the system-defined maximum length. For example, on Windows-based platforms, paths must be less than 248 characters and file names must be less than 260 characters.

SecurityException

The caller does not have the required permission to access unmanaged code.

FileNotFoundException

The specified path was not found.

When the application terminates, the working directory is restored to its original location (the directory where the process was started).

The path parameter is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory. To obtain the current working directory, see GetCurrentDirectory.

The path parameter is not case-sensitive.

The following table lists examples of other typical or related I/O tasks.

To do this...

See the example in this topic...

Create a text file.

How to: Write Text to a File

Write to a text file.

How to: Write Text to a File

Read from a text file.

How to: Read Text from a File

Rename or move a directory.

Directory.Move

DirectoryInfo.MoveTo

Delete a directory.

Directory.Delete

DirectoryInfo.Delete

Create a directory.

CreateDirectory

Directory

Create a subdirectory.

CreateSubdirectory

Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows CE Platform Note: Because some mobile device operating systems do not have current directory functionality, this method is not supported.

The following code example illustrates setting the current directory and displaying the directory root.

// This sample shows how to set the current directory and how to determine
// the root directory.
using System;
using System.IO;

namespace IOSamples
{
  public class DirectoryRoot
  {
    public static void Main()
    {
	// Create string for a directory. This value should be an existing directory
	// or the sample will throw a DirectoryNotFoundException.
      string dir = @"C:\test";		
	  try
	  {
		  //Set the current directory.
		  Directory.SetCurrentDirectory(dir);
	  }
	  catch (DirectoryNotFoundException e)
	  {
		  Console.WriteLine("The specified directory does not exist. {0}", e);
	  }
	// Print to console the results.
	  Console.WriteLine("Root directory: {0}", Directory.GetDirectoryRoot(dir));
	  Console.WriteLine("Current directory: {0}", Directory.GetCurrentDirectory());
    }
  }
}
// The output of this sample depends on what value you assign to the variable dir.
// If the directory c:\test exists, the output for this sample is:
// Root directory: C:\
// Current directory: C:\test


// This sample shows how to set the current directory and how to determine
// the root directory.

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

public class DirectoryRoot
{
    public static void main(String[] args)
    {
        // Create string for a directory. This value should be an existing 
        // directory or the sample will throw a DirectoryNotFoundException.
        String dir = "C:\\test";
        try {
            //Set the current directory.
            Directory.SetCurrentDirectory(dir);
        }
        catch (DirectoryNotFoundException e) {
            Console.WriteLine("The specified directory does not exist. {0}", e);
        }
        // Print to console the results.
        Console.WriteLine("Root directory: {0}",
            Directory.GetDirectoryRoot(dir));
        Console.WriteLine("Current directory: {0}",
            Directory.GetCurrentDirectory());
    } //main
} //DirectoryRoot
// The output of this sample depends on what value you assign to the 
// variable dir.
// If the directory c:\test exists, the output for this sample is:
// Root directory: C:\
// Current directory: C:\test

Windows 98, Windows 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 .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.

.NET Framework

Supported in: 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 2.0, 1.0
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