Asp.net MVC 异步处理。

最新推荐文章于 2025-09-05 10:22:00 发布

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本文介绍了一个使用异步操作的HomeController类，该类利用了.NET Framework中的AsyncController特性来实现延迟加载，并通过WebRequest实现了对外部资源的异步获取。文章展示了如何设置输出缓存、超时处理及错误捕获。

public class HomeController : AsyncController
    {
        //
        // GET: /Home/
        [OutputCache(Duration = 3)]
        [AsyncTimeout(10000)]
        [HandleError(ExceptionType = typeof(TimeoutException), View = "Error")]
        public void IndexAsync()
        {
            AsyncManager.OutstandingOperations.Increment();
            WebRequest wr = WebRequest.Create("http://www.baidu.com/");
            wr.BeginGetResponse(asyncResult =>
                                         {
                                             
                                             using (WebResponse response = wr.EndGetResponse(asyncResult))
                                             {
                                                 Thread.Sleep(3000);
                                                 AsyncManager.Parameters["dd"] = Request.UserHostAddress;
                                                 AsyncManager.Parameters["de"] = asyncResult.CompletedSynchronously;
                                                 AsyncManager.OutstandingOperations.Decrement();
                                             }
                                         },null);
            //return View(DateTime.Now);
        }
        public ActionResult IndexCompleted(string dd, bool de)
        {
            return View(new {a1=dd,a2=de});
        }
    }