How to replace "Error. An error occurred while processing your request." [duplicate]

In my Web.config I have.

<customErrors mode="On" defaultRedirect="~/Errors/Unknown"> <error statusCode="403" redirect="~/Errors/Forbidden"></error> <error statusCode="404" redirect="~/Errors/NotFound"></error>
</customErrors>

It works fine if I try to open a page that doesn't exist. (It redirects to my custom error page: ErrorsController.NotFound). When an unhandled exception occurs (in this case in LINQ Signle(...)). It doesn't go to ~/Errors/Unknown, but displays default message:

Error. An error occurred while processing your request.

How replace it with my ErrorsController.Unknown ?

1 Answer

Thanks to this question I figured out how to do this. The code below is almost the same as the accepted answer's. The modification handles no HttpExceptions too.

Steps to make it work:

1. customErrors element in web.config will now be ignored

2. Paste the method below to your Global.axax.

   protected void Application_Error(object sender, EventArgs e)
   { Exception exception = Server.GetLastError(); Response.Clear(); var httpException = exception as HttpException; if (httpException != null) { string action; switch (httpException.GetHttpCode()) { case 404: // page not found action = "NotFound"; break; case 403: // forbidden action = "Forbidden"; break; case 500: // server error action = "HttpError500"; break; default: action = "Unknown"; break; } // clear error on server Server.ClearError(); Response.Redirect(String.Format("~/Errors/{0}", action)); }else { // this is my modification, which handles any type of an exception. Response.Redirect(String.Format("~/Errors/Unknown")); }
   }