private async void mainWindow_page_CV(object sender, System.EventArgs e)
        {
            WindowFoUrl windowURL = new WindowFoUrl();

            windowURL.Url += new EventDelegate(set_URL);
            windowURL.Show();
        }
        private async void set_URL(WindowFoUrl windowURL)
        {
            string tempUrl = windowURL.textBox.Text;

            bool isUrlExist = await _helperService.IsUrlExistAsync(url);

            if (isUrlExist)
            {
                url = tempUrl;
            }

            windowURL.Close();
        }