Our client wants to be able to redesign the page which displays an "Unhandled Exception".

We're using Visual Studio 2012 with C#.NET (ASPX).

Is this possible to do?

Edit: Thanks for the downvotes. Care to explain why?


From Microsoft: Displaying a Custom Error Page (C#):

When an unhandled exception arises in an ASP.NET application one of three types of error pages is displayed:

  • The Exception Details Yellow Screen of Death error page,
  • The Runtime Error Yellow Screen of Death error page, or
  • A custom error page

Short version:

  • Create a custom web page in your ASP.NET web app.
  • Add customErrors markup to the configuration -> system.web section of your application's web.config file:

        <customErrors mode="RemoteOnly"
                      defaultRedirect="~/ErrorPages/Oops.aspx" />

See the above link for additional information on how to do it, as well as how to add custom pages for individual HTTP status codes, etc.

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