private void dataGridView1_CellContentClick(object sender, DataGridViewCellEventArgs e)
{
if (dataGridView1.CurrentRow.Cells[4].Selected)
{
ogrtmn.dataTable4.Clear();
ogrtmn.ogrenciler(Convert.ToInt16(dataGridView1.CurrentRow.Cells[0].Value), Convert.ToInt16(dataGridView1.CurrentRow.Cells[1].Value), giris.ogrid);
if (ogrtmn.dataTable4.Rows.Count != 0)
{
dataGridView2.DataSource = ogrtmn.dataTable4;
dataGridView2.Visible = true;
button1.Visible = true;
label2.Text = "";
}
else
{
label2.Text = "Bu dersi hiçbir öğrenci seçmemiştir.";
}
}
}