private void KullaniciPaneli_Click(object sender, EventArgs e)
{
Kulp_sinif frm2 = new Kulp_sinif();
frm2.Show();
this.Hide();
}
private void pb_geri_Click(object sender, EventArgs e)
{
Kulp_sinif sinif3 = new Kulp_sinif();
sinif3.Show();
this.Hide();
}
private void pb_geri_Click(object sender, EventArgs e)
{
Kulp_sinif anafrm = new Kulp_sinif();
anafrm.Show();
this.Hide();
}