The remote server returned an error: (500) Internal Server Error

when getting error "The remote server returned an error: (500) Internal Server Error".
we get exact error in WebException



                HttpWebResponse response = null;
                try
                {
                    response = (HttpWebResponse)request.GetResponse();

                }
                catch (WebException wex)
                {
                    string WebError = new StreamReader(wex.Response.GetResponseStream()).ReadToEnd().ToString();
                    return WebError;
                }