DefaultHttpHandler.BeginProcessRequest Method

Reference

Definition

Namespace:: System.Web

Assembly:: System.Web.dll

Important

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Initiates an asynchronous call to the HTTP handler.

public:
 virtual IAsyncResult ^ BeginProcessRequest(System::Web::HttpContext ^ context, AsyncCallback ^ callback, System::Object ^ state);

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

abstract member BeginProcessRequest : System.Web.HttpContext * AsyncCallback * obj -> IAsyncResult
override this.BeginProcessRequest : System.Web.HttpContext * AsyncCallback * obj -> IAsyncResult

Public Overridable Function BeginProcessRequest (context As HttpContext, callback As AsyncCallback, state As Object) As IAsyncResult

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

IAsyncResult

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

Implements

BeginProcessRequest(HttpContext, AsyncCallback, Object)

Exceptions

HttpException

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