Question

for error handling I have a few lines of code for catching every error in the global.asax
: void Application_Error(object sender, EventArgs e) the content of the function looks like this:

try
    {
       Exception objErr = Server.GetLastError().GetBaseException();

       if (!(objErr is HttpException))
       {
           shop.BLL.Utility.Errorlog.WriteError(objErr, "Global.asax caught an Exception");
       }
       else
       {
           HttpException hex = (HttpException)objErr;
           if (hex.ErrorCode == 404)
               Response.Redirect("404.aspx?msg=" + hex.Message);
           else
           {
               shop.BLL.Utility.Errorlog.WriteError(hex, "Global.asax caught an HttpException code: " + hex.ErrorCode);
           }
       }

    }
    catch { }

    Server.ClearError();

now here is the thing: when I go to blabla.aspx, which does not exists, it ends up on line shop.BLL.Utility.Errorlog.WriteError(hex, "Global.asax caught an HttpException code: " + hex.ErrorCode); and the value of the errorcode is -2147467259

Why isn’t it a 404?

Answer 1

I think you should check with GetHttpCode() method.

 HttpException hex = (HttpException)objErr;
 if (hex.GetHttpCode() == 404)
     Response.Redirect("404.aspx?msg=" + hex.Message);