private void button1_Click(object sender, EventArgs e)
        {
            var durum = string.IsNullOrEmpty(textBox1.Text) ||
                        string.IsNullOrWhiteSpace(textBox2.Text) ||
                        string.IsNullOrWhiteSpace(textBox3.Text) ||
                        string.IsNullOrWhiteSpace(textBox4.Text) ||
                        string.IsNullOrWhiteSpace(textBox5.Text) ||
                        string.IsNullOrWhiteSpace(textBox6.Text) ||
                        comboBox1.SelectedIndex == -1;

            if (durum)
            {
                MessageBox.Show("Tüm Alanları Doldurun !");
            }
            else
            {
                if (textBox1.Text.Length < 11)
                {
                    MessageBox.Show("Geçerli Bir Tc Giriniz !");
                }
                else
                {
                    Aboneler ab = new Aboneler();


                    ab.AbonelikDurumu = true;

                    ab.TC         = textBox1.Text;
                    ab.Ad         = textBox2.Text;
                    ab.Soyad      = textBox3.Text;
                    ab.Telefon    = textBox4.Text;
                    ab.Email      = textBox5.Text;
                    ab.PlakaNo    = textBox6.Text;
                    ab.AracTipiID = comboBox1.SelectedIndex + 1;


                    AboneİslemHelper.AboneKayıt(ab);
                    dataGridView1.DataSource = AboneİslemHelper.AboneleriGetir();
                    textBox1.Clear();
                    textBox2.Clear();
                    textBox3.Clear();
                    textBox4.Clear();
                    textBox5.Clear();
                    textBox6.Clear();
                }
            }
        }
        private void button2_Click(object sender, EventArgs e)
        {
            int    aboneID        = Convert.ToInt32(dataGridView1.CurrentRow.Cells[0].Value);
            string tc             = dataGridView1.CurrentRow.Cells[1].Value.ToString();
            string ad             = dataGridView1.CurrentRow.Cells[2].Value.ToString();
            string soyad          = dataGridView1.CurrentRow.Cells[3].Value.ToString();
            string tel            = dataGridView1.CurrentRow.Cells[4].Value.ToString();
            string email          = dataGridView1.CurrentRow.Cells[5].Value.ToString();
            string plaka          = dataGridView1.CurrentRow.Cells[6].Value.ToString();
            int    aractipID      = Convert.ToInt32(dataGridView1.CurrentRow.Cells[7].Value);
            bool   AbonelikDurumu = Convert.ToBoolean(dataGridView1.CurrentRow.Cells[8].Value);

            MusteriGuncelle mg = new MusteriGuncelle(aboneID, tc, ad, soyad, tel, email, plaka, aractipID, AbonelikDurumu);

            mg.Show();
            dataGridView1.DataSource = AboneİslemHelper.AboneleriGetir();
        }
 private void button3_Click(object sender, EventArgs e)
 {
     dataGridView1.DataSource = AboneİslemHelper.AboneleriGetir();
 }
 private void MusteriKayıt_Load(object sender, EventArgs e)
 {
     dataGridView1.DataSource = AboneİslemHelper.AboneleriGetir();
 }