private void btnGiris_Click(object sender, EventArgs e) { if (txtKullaniciAdi.Text == "" || txtSifre.Text == "") { MessageBox.Show("Alanlar boş olmamalıdır!"); } else { OleDbConnection con = new OleDbConnection("Provider=Microsoft.ACE.OLEDB.12.0; Data Source = FilmAy.accdb; Jet OLEDB:Database Password = film"); OleDbCommand cmd = new OleDbCommand("select * from Kullanicilar where KullaniciAdi='" + txtKullaniciAdi.Text + "' and Sifre='" + txtSifre.Text + "'", con); con.Open(); OleDbDataReader dr = cmd.ExecuteReader(); if (dr.Read()) { Info.KullaniciId = dr["KullaniciID"].ToString(); Info.KullaniciAdi = dr["KullaniciAdi"].ToString(); Info.Ad = dr["Adi"].ToString(); Info.soyad = dr["Soyadi"].ToString(); Info.sifre = dr["Sifre"].ToString(); Info.Bakiye = Convert.ToInt32(dr["Bakiye"]); if ((int)dr["Yetki"] == 1) { frmAdminPanel frm = new frmAdminPanel(); this.Hide(); frm.Show(); } else { frmKutuphane frm1 = new frmKutuphane(); this.Hide(); frm1.Show(); } } else { MessageBox.Show("Hatalı Kullanıcı Adı veya Şifre!"); } } }