private void BtnYonetici_Click(object sender, EventArgs e)
{
a = 1;
FrmGirisYetki Frm = new FrmGirisYetki(a);
Frm.Show();
this.Hide();
}
private void BtnOgretmen_Click(object sender, EventArgs e)
{
a = 2;
FrmGirisYetki Frm = new FrmGirisYetki(a);
Frm.Show();
this.Hide();
}