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Archives / 2008 / September
  • Asynchronous error handling change in ASP.NET AJAX 3.5

    There is a subtle change in the .NET 3.5 release of the Microsoft Ajax Library that might catch some developers by surprise when handling asynchronous postback errors. The change can be found at the end of the endPostBack function of the PageRequestManager object. In the first release of the Ajax library, if an error was not handled on the client; an alert box was used to convey to the user the error message:

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