private void button1_Click(object sender, EventArgs e) { string connStr = cmbCon.Text; if (connStr != "" && connStr != null) { IQueryFilter qf = new QueryFilterClass(); qf.WhereClause = "CONNECTION = '" + cmbCon.Text + "'"; msUtil.removeExistingRecords(msUtil.ConnectionsTable, qf); cmbCon.Items.Remove(connStr); cmbCon.Text = ""; cmbSrv.Items.Clear(); cmbSrv.Text = ""; chbLayers.Items.Clear(); } cmbCon.SelectedItem = cmbCon.Items[0]; }