private void tsPrecrisptions_Click(object sender, EventArgs e)
{
if (prescription == null)
{
prescription = new frmPatientPrescription();
prescription.MdiParent = this;
prescription.FormClosed += new FormClosedEventHandler(prescription_FormClosed);
prescription.Show();
}
else
{
prescription.Activate();
prescription.WindowState = FormWindowState.Normal;
}
}
void prescription_FormClosed(object sender, FormClosedEventArgs e)
{
prescription = null;
}