private void tsDiagnosisInfo_Click(object sender, EventArgs e) { if (diagnosiInfo == null) { diagnosiInfo = new frmPatientDiagnosisInfo(); diagnosiInfo.MdiParent = this; diagnosiInfo.FormClosed += new FormClosedEventHandler(diagnosiInfo_FormClosed); diagnosiInfo.Show(); } else { diagnosiInfo.Activate(); diagnosiInfo.WindowState = FormWindowState.Normal; } }
void diagnosiInfo_FormClosed(object sender, FormClosedEventArgs e) { diagnosiInfo = null; }