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AuthenticationManager::Authenticate Method

Calls each registered authentication module to find the first module that can respond to the authentication request.

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

static Authorization^ Authenticate(
	String^ challenge, 
	WebRequest^ request, 
	ICredentials^ credentials


Type: System::String

The challenge returned by the Internet resource.

Type: System.Net::WebRequest

The WebRequest that initiated the authentication challenge.

Type: System.Net::ICredentials

The ICredentials associated with this request.

Return Value

Type: System.Net::Authorization
An instance of the Authorization class containing the result of the authorization attempt. If there is no authentication module to respond to the challenge, this method returns nullptr.


challenge is nullptr.


request is nullptr.


credentials is nullptr.

The Authenticate method calls the IAuthenticationModule::Authenticate method on each registered authentication module until one of the module responds with an Authorization instance.

The first Authorization instance returned is used to authenticate the request. If no authentication module can authenticate the request, the Authenticate method returns nullptr.

Authentication modules are called in the order in which they are registered with the AuthenticationManager.

.NET Framework

Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1

.NET Framework Client Profile

Supported in: 4, 3.5 SP1
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