Calls each registered authentication module to find the first module that can respond to the authentication request.
Assembly: System (in System.dll)
public static function Authenticate( challenge : String, request : WebRequest, credentials : ICredentials ) : Authorization
- Type: System.String
The challenge returned by the Internet resource.
challenge is a null reference (Nothing in Visual Basic).
request is a null reference (Nothing in Visual Basic).
credentials is a null reference (Nothing in Visual Basic).
The first Authorization instance returned is used to authenticate the request. If no authentication module can authenticate the request, the method returns a null reference (Nothing in Visual Basic).
Authentication modules are called in the order in which they are registered with the AuthenticationManager.
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
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.