Page.AsyncPageBeginProcessRequest(HttpContext, AsyncCallback, Object) 方法

定义

命名空间:

System.Web.UI

程序集:

System.Web.dll

开始处理异步页面请求。

protected:
 IAsyncResult ^ AsyncPageBeginProcessRequest(System::Web::HttpContext ^ context, AsyncCallback ^ callback, System::Object ^ extraData);

protected IAsyncResult AsyncPageBeginProcessRequest(System.Web.HttpContext context, AsyncCallback callback, object extraData);

member this.AsyncPageBeginProcessRequest : System.Web.HttpContext * AsyncCallback * obj -> IAsyncResult

Protected Function AsyncPageBeginProcessRequest (context As HttpContext, callback As AsyncCallback, extraData As Object) As IAsyncResult

参数

context

HttpContext

请求 HttpContext 的编号。

callback

AsyncCallback

在进程完成时通知的回调方法。

extraData

Object

异步方法的状态数据。

返回

IAsyncResult

引用异步请求的一个 IAsyncResult 。