Gute Idee, fangen HttpException?

catch exception in application-level -

    void Application_Error(object sender, EventArgs e)
{
  //Code that runs when an unhandled error occurs

  //Get the exception object.
  Exception exc = Server.GetLastError();

  //Handle HTTP errors
  if (exc.GetType() == typeof(HttpException))
  {
    //The Complete Error Handling Example generates
    //some errors using URLs with "NoCatch" in them;
    //ignore these here to simulate what would happen
    //if a global.asax handler were not implemented.
      if (exc.Message.Contains("NoCatch") || exc.Message.Contains("maxUrlLength"))
      return;

    //Redirect HTTP errors to HttpError page
    Server.Transfer("HttpErrorPage.aspx");
  }

  //For other kinds of errors give the user some information
  //but stay on the default page
  Response.Write("<h2>Global Page Error</h2>\n");
  Response.Write(
      "<p>" + exc.Message + "</p>\n");
  Response.Write("Return to the <a href='Default.aspx'>" +
      "Default Page</a>\n");

  //Log the exception and notify system operators
  ExceptionUtility.LogException(exc, "DefaultPage");
  ExceptionUtility.NotifySystemOps(exc);

  //Clear the error from the server
  Server.ClearError();
}