private void yetkiliFirmaToolStripMenuItem_Click(object sender, EventArgs e)
{
if (firmaForm == null)
{
firmaForm = new Yetkili_Firma();
firmaForm.MdiParent = this;
firmaForm.FormClosed += FirmaForm_FormClosed;
firmaForm.Show();
}
else
{
firmaForm.Activate();
}
}
private void FirmaForm_FormClosed(object sender, FormClosedEventArgs e)
{
firmaForm = null;
}