private void button3_Click(object sender, EventArgs e)
 {
     DataSet1.musteri_bilgiRow r = dataSet1.musteri_bilgi.Newmusteri_bilgiRow();
     for (int i = 0; i <= dataGridView1.SelectedRows.Count; i++)
     {
         int id = (int)dataGridView1.SelectedRows[0].Cells[0].Value;
         r = dataSet1.musteri_bilgi.FindById(id);
         r.Delete();
         musteri_bilgiTableAdapter.Update(r);
     }
 }
        private void button2_Click(object sender, EventArgs e)//müsteri düzenle
        {
            yenimusteri y = new yenimusteri();

            y.yeni = false;
            int id = (int)dataGridView1.SelectedRows[0].Cells[0].Value;

            DataSet1.musteri_bilgiRow r = dataSet1.musteri_bilgi.FindById(id);
            y.r = r;
            if (y.ShowDialog() == DialogResult.OK)
            {
                musteri_bilgiTableAdapter.Update(r);
            }
        }