private void tsbQuick_Click(object sender, EventArgs e)
{
QuickCondTotal qct = QuickCondTotal.CreateForm();
qct.MdiParent = this;
qct.Show();
}
public static QuickCondTotal CreateForm()
{
if (_single == null)
{
_single = new QuickCondTotal();
}
else
{
_single.Activate();
}
return(_single);
}
private void this_FormClosed(object sender, FormClosedEventArgs e)
{
_single = null;
}