private void consulterModifierLigueToolStripMenuItem_Click(object sender, EventArgs e)
{
if (f3 == null)
{
f3 = new ModifClub();
f3.MdiParent = this;
f3.FormClosed += F3_FormClosed;;;
f3.Show();
Form childForm = new Form();
}
else
{
f3.Activate();
}
}
private void F3_FormClosed(object sender, FormClosedEventArgs e)
{
f3 = null;
}