Uri.CheckSchemeName Method

Determines whether the specified scheme name is valid.

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

public static bool CheckSchemeName(
	string schemeName
)

Parameters

schemeName
Type: System.String
The scheme name to validate.

Return Value

Type: System.Boolean
A Boolean value that is true if the scheme name is valid; otherwise, false.

This method checks the scheme name for validity according to RFC 2396 by default. If International Resource Identifiers (IRIs) or Internationalized Domain Name (IDN) parsing is enabled, this method checks the scheme name for validity according to RFC 3986. The scheme name must begin with a letter and must contain only letters, digits, and the characters ".", "+", or "-".

For more information on IRI support, see the Remarks section for the Uri class.

The following example creates a Uri instance and checks whether the scheme name is valid.


Uri address1 = new Uri("http://www.contoso.com/index.htm#search");
Console.WriteLine("address 1 {0} a valid scheme name",
      Uri.CheckSchemeName(address1.Scheme) ? " has" : " does not have");

if (address1.Scheme == Uri.UriSchemeHttp)
    Console.WriteLine("Uri is HTTP type");

Console.WriteLine(address1.HostNameType);


.NET Framework

Supported in: 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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