private void GridReturns_CellContentClick(object sender, DataGridViewCellEventArgs e)
 {
     if (Util.isColumnMatch(sender, e, col_gridReturns_hexbarcode))
     {
         Util.displayForm(null, new Returns.Print_Form(Util.getSelectedRowID(sender, col_gridReturns_id)));
     }
     else if (Util.isColumnMatch(sender, e, col_gridReturns_removeKontrabons_Id))
     {
         SaleReturn.update_Kontrabons_Id((Guid)Util.getSelectedRowValue(sender, col_gridReturns_id), null);
         updateRowInfo();
     }
 }
 private void BtnAddReturns_Click(object sender, EventArgs e)
 {
     if (_lastSelectedKontrabons_Id == null)
     {
         Util.displayMessageBoxError("Double click kontrabon");
     }
     else
     {
         if (!Util.selectedItemIsNotNull(dgv, col_dgv_Customers_Id))
         {
             Util.displayMessageBoxError("Invalid Customer");
         }
         else
         {
             Returns.Main_Form form = new Returns.Main_Form(FormModes.Browse, (Guid)Util.getSelectedRowValue(dgv, col_dgv_Customers_Id));
             Util.displayForm(null, form);
             if (form.DialogResult == DialogResult.OK)
             {
                 SaleReturn.update_Kontrabons_Id(form.BrowsedItemSelectionId, (Guid)_lastSelectedKontrabons_Id);
                 populateGridReturns(true);
             }
         }
     }
 }