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 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.