本文整理汇总了C#中System.Web.UI.PageAsyncTask类的典型用法代码示例。如果您正苦于以下问题：C# PageAsyncTask类的具体用法？C# PageAsyncTask怎么用？C# PageAsyncTask使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。
PageAsyncTask类属于System.Web.UI命名空间，在下文中一共展示了PageAsyncTask类的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: AsyncTaskDelegate
//引入命名空间
using System;
using System.Web;
using System.Web.UI;
using System.Threading;
namespace Samples.AspNet.CS.Controls
{
public class SlowTask
{
private String _taskprogress;
private AsyncTaskDelegate _dlgt;
// Create delegate.
protected delegate void AsyncTaskDelegate();
public String GetAsyncTaskProgress()
{
return _taskprogress;
}
public void ExecuteAsyncTask()
{
// Introduce an artificial delay to simulate a delayed
// asynchronous task.
Thread.Sleep(TimeSpan.FromSeconds(5.0));
}
// Define the method that will get called to
// start the asynchronous task.
public IAsyncResult OnBegin(object sender, EventArgs e,
AsyncCallback cb, object extraData)
{
_taskprogress = "AsyncTask started at: " + DateTime.Now + ". ";
_dlgt = new AsyncTaskDelegate(ExecuteAsyncTask);
IAsyncResult result = _dlgt.BeginInvoke(cb, extraData);
return result;
}
// Define the method that will get called when
// the asynchronous task is ended.
public void OnEnd(IAsyncResult ar)
{
_taskprogress += "AsyncTask completed at: " + DateTime.Now;
_dlgt.EndInvoke(ar);
}
// Define the method that will get called if the task
// is not completed within the asynchronous timeout interval.
public void OnTimeout(IAsyncResult ar)
{
_taskprogress += "AsyncTask failed to complete " +
"because it exceeded the AsyncTimeout parameter.";
}
}
}