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Path.AltDirectorySeparatorChar Field

Provides a platform-specific alternate character used to separate directory levels in a path string that reflects a hierarchical file system organization.

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

public static readonly char AltDirectorySeparatorChar

The character stored in this field cannot be in InvalidPathChars. This field can be set to the same value as DirectorySeparatorChar. AltDirectorySeparatorChar and DirectorySeparatorChar are both valid for separating directory levels in a path string.

The value of this field is a backslash ('\') on UNIX, and a slash ('/') on Windows and Macintosh operating systems.

The following code example demonstrates a use of the AltDirectorySeparatorChar field.


foreach (char c in Path.GetInvalidPathChars())
// This code produces output similar to the following: 
// Note that the InvalidPathCharacters contain characters 
// outside of the printable character set. 
// Path.AltDirectorySeparatorChar=/ 
// Path.DirectorySeparatorChar=\ 
// Path.PathSeparator=; 
// Path.VolumeSeparatorChar=:

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC, Xbox 360, Zune

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0, 2.0, 1.1, 1.0

.NET Compact Framework

Supported in: 3.5, 2.0, 1.0

XNA Framework

Supported in: 3.0, 2.0, 1.0