private void listPlans_DoubleClick(object sender, System.EventArgs e) { if (listPlans.SelectedIndex == -1) { return; } if (PatPlans.GetCountForPatAndInsSub(SubList[listPlans.SelectedIndex].InsSubNum, _patNum) != 0) { MsgBox.Show(this, "This patient already has this plan attached. If you would like to add a new plan for the same subscriber and insurance carrier, click new plan."); return; } SelectedInsSubNum = SubList[listPlans.SelectedIndex].InsSubNum; DialogResult = DialogResult.OK; }