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

该请求的 HttpContext。

callback

AsyncCallback

用于通知处理完成时间的回调方法。

extraData

Object

异步方法的状态数据。

返回

IAsyncResult

引用该异步请求的 IAsyncResult。