private void Form4_Load(object sender, EventArgs e) { try { SqlConnection myconnection = new SqlConnection("Data Source=DESKTOP-G51H1QD\\SQLEXPRESS;Initial Catalog=DatabaseManagementProject;Integrated Security=True;Connect Timeout=15;Encrypt=False;TrustServerCertificate=False"); string[] a = sorgu.SelectBolumCBox(); for (int i = 0; i < a.Length; i++) { Bolum_Cbox.Items.Add(a[i]); } string[] b = sorgu.SelectUnvanCbox(); for (int i = 0; i < b.Length; i++) { Unvan_Cbox.Items.Add(b[i]); } string[] c = sorgu.SelectMeslekCBox(); for (int i = 0; i < c.Length; i++) { Meslek_Cbox.Items.Add(c[i]); } Refresh1(); } catch (Exception h) { MessageBox.Show(h.ToString(), "Hata Kod:15", MessageBoxButtons.OK, MessageBoxIcon.Error); } }