private void OnSaveClickCommand()
 {
     try
     {
         if (!_modelTrain.IsBusy)
         {
             if (CheckInputData())
             {
                 IsLoading        = true;
                 ItemEdit.MaKhoa  = MaKhoa;
                 ItemEdit.TenKhoa = TenKhoa;
                 ItemEdit.Loai    = _selectedType.TypeID;
                 if (ParentID > 0)
                 {
                     ItemEdit.ParentID = ParentID;
                 }
                 else
                 {
                     ItemEdit.ParentID = null;
                 }
                 _modelTrain.SaveDepartmentAsync(ItemEdit);
             }
         }
     }
     catch (Exception ex)
     {
         MessageCustomize.Show(ex.Message);
     }
 }