public void Save() { string Result = ""; ComfirmWindow com = new ComfirmWindow(); com.OnSelectionBoxClosed += (objects, result) => { RefreshUI(RefreshedTypes.ShowProgressBar); System.Collections.ObjectModel.ObservableCollection <T_HR_SALARYITEM> lists = new System.Collections.ObjectModel.ObservableCollection <T_HR_SALARYITEM>(); foreach (var ent in SalaryItemList) { lists.Add(ent); } client.FormulaTemplateAddAsync(lists); }; com.SelectionBox(Utility.GetResourceStr("SALARYITEM"), Utility.GetResourceStr("SALARYITEMDESC"), ComfirmWindow.confirmation, Result); }