Calls each registered authentication module to find the first module that can respond to the authentication request.
Assembly: System (in System.dll)
'Declaration Public Shared Function Authenticate ( _ challenge As String, _ request As WebRequest, _ credentials As ICredentials _ ) As Authorization
- Type: System.String
The challenge returned by the Internet resource.
challenge is Nothing.
request is Nothing.
credentials is Nothing.
The first Authorization instance returned is used to authenticate the request. If no authentication module can authenticate the request, the method returns Nothing.
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.