Calls each registered authentication module to find the first module that can respond to the authentication request.
Assembly: System (in System.dll)
static member 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 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.