private void btnreport_Click(object sender, EventArgs e)
{
if (s == null)
{
SubmitReport s = new SubmitReport();
s.FormClosed += S_FormClosed;
s.MdiParent = this;
s.Show();
}
else
{
s.Activate();
}
}
private void S_FormClosed(object sender, FormClosedEventArgs e)
{
s = null;
// throw new NotImplementedException();
}
