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UriParser.IsKnownScheme Method

Indicates whether the parser for a scheme is registered.

Namespace: System
Assembly: System (in system.dll)

public static bool IsKnownScheme (
	string schemeName
public static boolean IsKnownScheme (
	String schemeName
public static function IsKnownScheme (
	schemeName : String
) : boolean
Not applicable.



The scheme name to check.

Return Value

true if schemeName has been registered; otherwise, false.

Exception typeCondition


The schemeName parameter is null.


The schemeName parameter is not valid.

Windows 98, Windows Server 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 Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

.NET Framework

Supported in: 3.0, 2.0