private void radButton1_Click(object sender, EventArgs e) { if (!string.IsNullOrEmpty(txtUrl.Text) && !string.IsNullOrWhiteSpace(txtUrl.Text)) { string[] sl = lvFormatList.SelectedItem.Tag.ToString().Split(char.Parse("£")); _selected_video_format = sl[0]; _videoExtension = sl[1]; Console.WriteLine("Selected format: " + _selected_video_format); //_selected_video_format = _selected_video_format.Replace(" ", ""); videoDownloader.StartDownload(_videoUrl, _videoSavePath, _selected_video_format, _videoExtension); } else { MessageBox.Show("Please enter the URL before downloading.", "URL not found", MessageBoxButtons.OK, MessageBoxIcon.Error); } }