private void bloodBankToolStripMenuItem_Click(object sender, EventArgs e)
{
if (mnForm == null)
{
mnForm = new ManageBloodForm();
mnForm.FormClosed += new FormClosedEventHandler(ManageBloodForm_FormClosed);
mnForm.MdiParent = this;
mnForm.Show();
}
else
{
mnForm.Activate();
}
}
private void ManageBloodForm_FormClosed(object sender, FormClosedEventArgs e)
{
mnForm = null;
}