/// <summary>
 /// 选择餐桌类型或者区域时调用
 /// </summary>
 public void TypeItemSelectionChanged()
 {
     //MessageBox.Show("确定要对进行开台吗?" + TypeSelectedItem.Name + TypeSelectedItem.Id, "提示", MessageBoxButton.YesNo);
     if (TypeSelectedItem.Id == -1)
     {
         InitTableLocationItemData(1);
     }
     else
     {
         List <Table> tables = _TableStatusService.GetTableAndRefByTypeId(TypeSelectedItem.Id);
         TableItems.Clear();
         LoaderTableItem(tables);
     }
 }