Parameters

path

A string containing the path information from which to obtain the filename and extension. [Edit]

Returns

A string consisting of the characters after the last directory character in path. If the last character of path is a directory separator character, returns string.Empty. If path is null, returns null.

Platforms that do not support this feature return path unmodified.

[Edit]

Exceptions

Type	Reason
ArgumentException	path contains one or more implementation-specific invalid characters. [Edit]

Remarks

The directory separator characters used to determine the start of the file name are Path.DirectorySeparatorChar and Path.AltDirectorySeparatorChar. [Edit]

Example

The following example demonstrates the behavior of the Path.GetFileName(string) method on a Windows system.

C# Example

using System; using System.IO; class FileNameTest { public static void Main() { string [] paths = {"pathtests.txt", @"\ecmatest\examples\pathtests.txt", "c:pathtests.txt", @"\ecmatest\examples\", "" }; foreach (string p in paths) { Console.WriteLine("Path: {0} filename = {1}",p, Path.GetFileName(p)); } } }

The output is

Path: pathtests.txt filename = pathtests.txt
Path: \ecmatest\examples\pathtests.txt filename = pathtests.txt
Path: c:pathtests.txt filename = pathtests.txt
Path: \ecmatest\examples\ filename =
Path: filename =

Requirements

Namespace: System.IO
Assembly: mscorlib (in mscorlib.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0