mcs/class/System.Web.Mvc3/Mvc/Async/AsyncActionDescriptor.cs

   1 namespace System.Web.Mvc.Async {
   2     using System;
   3     using System.Collections.Generic;
   4
   5     public abstract class AsyncActionDescriptor : ActionDescriptor {
   6
   7         public abstract IAsyncResult BeginExecute(ControllerContext controllerContext, IDictionary<string, object> parameters, AsyncCallback callback, object state);
   8
   9         public abstract object EndExecute(IAsyncResult asyncResult);
  10
  11         public override object Execute(ControllerContext controllerContext, IDictionary<string, object> parameters) {
  12             // execute an asynchronous task synchronously
  13             IAsyncResult asyncResult = BeginExecute(controllerContext, parameters, null, null);
  14             AsyncUtil.WaitForAsyncResultCompletion(asyncResult, controllerContext.HttpContext.ApplicationInstance); // blocks
  15             return EndExecute(asyncResult);
  16         }
  17
  18         internal static AsyncManager GetAsyncManager(ControllerBase controller) {
  19             IAsyncManagerContainer helperContainer = controller as IAsyncManagerContainer;
  20             if (helperContainer == null) {
  21                 throw Error.AsyncCommon_ControllerMustImplementIAsyncManagerContainer(controller.GetType());
  22             }
  23
  24             return helperContainer.AsyncManager;
  25         }
  26
  27     }
  28 }