private void unassign_button_Click(object sender, EventArgs e) { string unassign_query = "delete from d_cadcamjobassignlist where ordernumber = '" + ordernumber + "' and stage like 'CNC'"; ExcoODBC database = ExcoODBC.Instance; OdbcDataReader reader; database.Open(Database.DECADE_MARKHAM); reader = database.RunQuery(unassign_query); reader.Close(); s.Refresh_Tables(); this.Close(); this.Dispose(); }