private void RemoveDetailItem(DetailBillItemViewModel item)
 {
     ListDetailBill.Remove(item);
     NotifyDetaillBillProperty();
 }
 private void SelectedDetailChange(DetailBillItemViewModel item)
 {
     //RemoveItem(item);
 }
 private void RemoveItem(DetailBillItemViewModel item)
 {
     ListDetailBill.Remove(item);
 }
 private void RemoveItem(DetailBillItemViewModel item)
 {
     Debug.LogOutput("Remove item command " + item.ProductName);
 }