private void InitializeEditUnitCommand()
 {
     EditUnitCommand = new RelayCommand <object>(
         sender => { return(true); }, sender =>
     {
         if (string.IsNullOrEmpty(DisplayUnitName) || SelectedUnitItem == null)
         {
             return;
         }
         unitService.EditUnit(SelectedUnitItem.DisplayName, DisplayUnitName);
         UnitList = unitService.GetListUnit();
     });
 }