private void URL_TextBox_KeyUp(object sender, Windows.UI.Xaml.Input.KeyRoutedEventArgs e) { bool validURL = false; Uri newUri = Website.URL; try { newUri = new Uri(URL_TextBox.Text.ToString()); validURL = true; } catch { // Create the message dialog and set its content DisplayDialog("Error", "The URL entered was not a valid URL. A URL has to look like http://www.bing.com "); } if (validURL) { WebsiteDataSource.ChangeUrl(Website.ID, newUri); Result = RenameResult.RenameOK; } }