UpdatePanel Exception Handling

Question

Where exceptions occur in the UpdatePanels I\'ve implemented in the ASP.NET web app I\'m building, they cause a JavaScript error on the page with some high level error output av

Answer 1

If you just want to fix the browser javascript error and display the exception message to the user, you just need to add this to your Masterpage somewhere after the form declaration:

You do not need to catch the OnAsyncPostBackError even unless you want to customize the message. Go to my blog post if you want more information about this.