private void modificarToolStripMenuItem_Click(object sender, EventArgs e)
{
if (exp == null)
{
exp = new Modificar();
exp.MdiParent = this;
exp.FormClosed += new FormClosedEventHandler(exp_FormClosed);
exp.Show();
lblLogo.Visible = false;
picLogo.Visible = false;
}
else
{
exp.Activate();
lblLogo.Visible = false;
picLogo.Visible = false;
}
}
void exp_FormClosed(object sender, EventArgs e)
{
exp = null;
lblLogo.Visible = true;
picLogo.Visible = true;
}