sdk/samples/all in on code/Visual Studio 2010/CSASPNETBackgroundWorker/Global.asax.cs

   1 /****************************** Module Header ******************************\
   2 * Module Name:    Global.asax.cs
   3 * Project:        CSASPNETBackgroundWorker
   4 * Copyright (c) Microsoft Corporation
   5 *
   6 * When application starts up, Application_Start() method will be called.
   7 * In the Application_Start() method, it creates a BackgroundWorker object and
   8 * then stores it in Application State. Therefore, the worker_DoWork() will
   9 * keep executing until application ends.
  10 *
  11 * This source is subject to the Microsoft Public License.
  12 * See http://www.microsoft.com/opensource/licenses.mspx#Ms-PL.
  13 * All other rights reserved.
  14 *
  15 \*****************************************************************************/
  16
  17 using System;
  18 using System.Threading;
  19
  20 namespace CSASPNETBackgroundWorker
  21 {
  22     public class Global : System.Web.HttpApplication
  23     {
  24         /// <summary>
  25         /// Create a Background Worker to run the operation
  26         /// whenever the application start.
  27         /// </summary>
  28         protected void Application_Start(object sender, EventArgs e)
  29         {
  30             BackgroundWorker worker = new BackgroundWorker();
  31             worker.DoWork += new BackgroundWorker.DoWorkEventHandler(worker_DoWork);
  32             worker.RunWorker(null);
  33
  34             // This Background Worker is Applicatoin Level,
  35             // so it will keep working and it is shared by all users.
  36             Application["worker"] = worker;
  37         }
  38
  39         /// <summary>
  40         /// This operation will work without the end.
  41         /// </summary>
  42         void worker_DoWork(ref int progress,
  43             ref object _result, params object[] arguments)
  44         {
  45             // Do the operation every 1 second wihout the end.
  46             while (true)
  47             {
  48                 Thread.Sleep(1000);
  49
  50                 // This statement will run every 1 second.
  51                 progress++;
  52
  53                 // Other logic which you want it to keep running.
  54                 // You can do some scheduled tasks here by checking DateTime.Now.
  55             }
  56         }
  57     }
  58 }