Page.AsyncPageBeginProcessRequest(HttpContext, AsyncCallback, Object) 方法

定义

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

适用于