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GetFileName Method

Path.GetFileName Method

Returns the file name and extension of the specified path string.

Namespace:  System.IO
Assemblies:   mscorlib (in mscorlib.dll)
  System.Runtime.Extensions (in System.Runtime.Extensions.dll)

public static string GetFileName(
	string path
)

Parameters

path
Type: System.String

The path string from which to obtain the file name and extension.

Return Value

Type: System.String
The characters after the last directory character in path. If the last character of path is a directory or volume separator character, this method returns String.Empty. If path is null, this method returns null.

ExceptionCondition
ArgumentException

path contains one or more of the invalid characters defined in GetInvalidPathChars.

The returned value is null if the file path is null.

The separator characters used to determine the start of the file name are DirectorySeparatorChar and AltDirectorySeparatorChar.

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

The following code example demonstrates the behavior of the GetFileName method on a Windows-based desktop platform.

string fileName = @"C:\mydir\myfile.ext";
string path = @"C:\mydir\";
string result;

result = Path.GetFileName(fileName);
Console.WriteLine("GetFileName('{0}') returns '{1}'", 
    fileName, result);

result = Path.GetFileName(path);
Console.WriteLine("GetFileName('{0}') returns '{1}'", 
    path, result);

// This code produces output similar to the following: 
// 
// GetFileName('C:\mydir\myfile.ext') returns 'myfile.ext' 
// GetFileName('C:\mydir\') returns ''

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

XNA Framework

Supported in: 3.0, 2.0, 1.0

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8
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