File.Move Method (String, String)


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Moves a specified file to a new location, providing the option to specify a new file name.

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

public static void Move(
	string sourceFileName,
	string destFileName


Type: System.String

The name of the file to move. Can include a relative or absolute path.

Type: System.String

The new path and name for the file.

Exception Condition

The destination file already exists.


sourceFileName was not found.


sourceFileName or destFileName is null.


sourceFileName or destFileName is a zero-length string, contains only white space, or contains invalid characters as defined in InvalidPathChars.


The caller does not have the required permission.


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.


The path specified in sourceFileName or destFileName is invalid, (for example, it is on an unmapped drive).


sourceFileName or destFileName is in an invalid format.

This method works across disk volumes, and it does not throw an exception if the source and destination are the same. Note that if you attempt to replace a file by moving a file of the same name into that directory, you get an IOException. You cannot use the Move method to overwrite an existing file.

The sourceFileName and destFileName arguments can include 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.

If you try to move a file across disk volumes and that file is in use, the file is copied to the destination, but it is not deleted from the source.

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

The following example moves a file.

using System;
using System.IO;

class Test 
    public static void Main() 
        string path = @"c:\temp\MyTest.txt";
        string path2 = @"c:\temp2\MyTest.txt";
            if (!File.Exists(path)) 
                // This statement ensures that the file is created,
                // but the handle is not kept.
                using (FileStream fs = File.Create(path)) {}

            // Ensure that the target does not exist.
            if (File.Exists(path2))	

            // Move the file.
            File.Move(path, path2);
            Console.WriteLine("{0} was moved to {1}.", path, path2);

            // See if the original exists now.
            if (File.Exists(path)) 
                Console.WriteLine("The original file still exists, which is unexpected.");
                Console.WriteLine("The original file no longer exists, which is expected.");

        catch (Exception e) 
            Console.WriteLine("The process failed: {0}", e.ToString());


for reading from sourceFileName and writing to destFileName. Associated enumerations: FileIOPermissionAccess.Read, FileIOPermissionAccess.Write

Universal Windows Platform
Available since 10
.NET Framework
Available since 1.1
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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