DefaultHttpHandler.BeginProcessRequest Method

Definition

Initiates an asynchronous call to the HTTP handler.

public virtual IAsyncResult BeginProcessRequest (System.Web.HttpContext context, AsyncCallback callback, object state);

Parameters

context
HttpContext

An object that provides references to intrinsic server objects that are used to service HTTP requests.

callback
AsyncCallback

The method to call when the asynchronous method call is complete. If callback is null, the delegate is not called.

state
Object

Any state data that is needed to process the request.

Returns

An IAsyncResult that contains information about the status of the process.

Implements

Exceptions

The preconditions for processing a request fail and either the requested file has the suffix .asp or the request was sent through POST.

Remarks

When creating an HTTP handler for asynchronous use, your handler must implement the asynchronous BeginProcessRequest and EndProcessRequest methods that are called asynchronously by ASP.NET.

Applies to

Produto Versões
.NET Framework 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1