private void tbOrder_ModifyCottageID_Leave(object sender, EventArgs e)
 {
     if (!OrderUtils.CheckCottageID(Convert.ToInt32(tbOrder_ModifyCottageID.Text))) //Check is database contains selected cottage
     {
         return;
     }
     else
     {   //Update order's id in database
         string query2 = "START TRANSACTION; " +
                         "UPDATE varaus " +
                         "SET mokki_mokki_id='" + tbOrder_ModifyCottageID.Text + "' " + "WHERE varaus_id=" + lbOrder_ModifyOrderID.Text + "; " +
                         "COMMIT;";
         ConnectionUtils.OpenConnection();
         MySqlCommand command3 = new MySqlCommand(query2, ConnectionUtils.connection);
         command3.ExecuteNonQuery();
         ConnectionUtils.CloseConnection();
     }
 }