public async void CheckUrl(string url) { ProccessIsDone = false; MyStopWatch.Restart(); WebRequest webRequest = WebRequest.Create(url); WebResponse response = await webRequest.GetResponseAsync(); using (StreamReader reader = new StreamReader(response.GetResponseStream())) { string numberOfCharacters = await reader.ReadToEndAsync(); UrlSize = $"The Size Of Your Site Is: {numberOfCharacters.Length.ToString()} Bytes."; } ProccessIsDone = true; MyStopWatch.Stop(); }