private void OkButton_Click(object sender, RoutedEventArgs e) { string current = UserPreferencesUtil.GetMultipleFileUploadRepository(); if (!UserPreferencesUtil.SetMultipleFileUploadRepository(this.folderField.Text)) { MessageDisplayer.DisplayWarning("Upload Multiple File Repository", "Attempt to save an empty repository!"); setFolderName(UserPreferencesUtil.GetMultipleFileUploadRepository()); } else { this.Close(); } }