private void bwIChkAndFix_DoWork(object sender, DoWorkEventArgs e) { GGKUtilLib.integrityCheckAndFix(); DataTable dt = GGKUtilLib.QueryDB("select * from kit_master where reference=1"); if (dt.Rows.Count == 0) { this.Invoke(new MethodInvoker(delegate { admixtureToolStripMenuItem.Enabled = false; })); } }