C#

conn.Open();
            
            OleDbCommand komut = new OleDbCommand();
            komut.Connection = conn;
            komut.CommandText = "select * from uye where no='" + textBox5.Text + "'";
            OleDbDataReader dr = komut.ExecuteReader();
            while (dr.Read())
            {
                textBox5.Text = dr["no"].ToString();
                textBox6.Text = dr["adisoyadi"].ToString();
                textBox7.Text = dr["dogumyili"].ToString();
                textBox8.Text = dr["telefon"].ToString();
                textBox6.Enabled = false;
                textBox7.Enabled = false;
                textBox8.Enabled = false;
            }