private void Frmogrenci_Load(object sender, EventArgs e) { dataGridView1.DataSource = ds.GetData(); baglanti.Open(); SqlCommand komut = new SqlCommand("Select * From TblKulupler", baglanti); SqlDataAdapter da = new SqlDataAdapter(komut); DataTable dt = new DataTable(); da.Fill(dt); comboBox1.DisplayMember = "KulupAd"; comboBox1.ValueMember = "KulupID"; comboBox1.DataSource = dt; baglanti.Close(); }