/// <summary> /// 完成待办事项 /// </summary> /// <param name="id">待办事项的ID</param> /// <returns></returns> private async Task CompleteTodo(string id) { try { var currentMemo = MyToDos.ElementAt(MyToDos.ToList().FindIndex(sch => { if (sch.ID == id) { return(true); } else { return(false); } })); currentMemo.IsDone = !currentMemo.IsDone; await SerializerHelper.SerializerToJson <ObservableCollection <ToDo> >(MyToDos, "myschedules.sch", true); if (!App.isInOfflineMode) { var isDone = await PostHelper.FinishSchedule(id, currentMemo.IsDone? "1" : "0"); if (isDone) { await PostHelper.SetMyOrder(LocalSettingHelper.GetValue("sid"), ToDo.GetCurrentOrderString(MyToDos)); Messenger.Default.Send(new GenericMessage <ObservableCollection <ToDo> >(MyToDos), MessengerTokens.UpdateTile); } } else { Messenger.Default.Send(new GenericMessage <ObservableCollection <ToDo> >(MyToDos), MessengerTokens.UpdateTile); } } catch (Exception e) { var task = ExceptionHelper.WriteRecord(e); } }