In ASP.NET AJAX Beta2, UpdateProgress control from the "value-added" in the CTP moved ASP.NET AJAX core.    The following two articles on the UpdateProgress ASP.NET AJAX Basic translation from the official website. 

  Main content 

  1.    UpdateProgress control simple to use 

  2.    Use multiple UpdateProgress control 

  1.    UpdateProgress control simple to use 

  1.    Creating a Web page and switching to the design view. 

  2.    In the toolbox AJAX Extensions tab, double-click ScriptManager control added to the page. 

  3.    Double-click UpdatePanel control add to the page. 

  4.    Double-click UpdateProgress control added to the page. 

  5.    UpdateProgress control in the text added, "Progress……." 

  6.    In UpdatePanel add a Button and a Label. 

  7.    Label set of attribute values for the Text "Initial Page Rendered." 

  8.    Double-click Add Click Button incident. 

  9.    Click in the incident Buttond add the following code, here are the creation of a three-second delay and to Display the current time.    .    Preservation and press Ctrl + F5 operation. 

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  11.    Button click interface as follows: 

  2.    Use multiple UpdateProgress control 

  By default, UpdageProgress controls will be displayed on all pages UpdatePanel control the progress of updating information, in the previous version of the UpdateProgress, we can not only that a particular set UpdateProgress a UpdatePanel updates, the latest version of UpdateProgress control provided AssociatedUpdatePanelID Properties can be designated UpdateProgress control display which UpdatePanel control.    Below this example UpdateProgrss controls will only show it in the UpdatePanel update information. 

  1.    Creating a Web page and switching to the design view. 

  2.    In the toolbox AJAX Extensions tab, double-click ScriptManager control added to the page. 

  3.    Double-click Add two UpdatePanel control UpdatePanel control to two pages. 

  4.    In each UpdatePanel respectively, and add a Label Button. 

  5.    Label each set of two attribute values for the Text "Initial Page Rendered."    (Some of the official website this step) 

  6.    Double-click controls add a Button Click incident. 

  7.    Click in the incident Buttond add the following code, here are the creation of a three-second delay and to display the current time.    .    Switching to the design view. 

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  9.    In the first UpdatePanel add UpdateProgrss controls, and add text Panel1 updating… 

  10.    In the second UpdatePanel add UpdateProgress control, Panel2 updating… 

  11.    Preservation and press Ctrl + F5 operation 

  12.    Click a button UpdatePanel Button in progress information only shows in the first UpdatePanel. 

  13.    Click in the second UpdatePanel Button button, the progress of information only shows in the second UpdatePanel.