ms sql de güncelleme

 textBox1.Text = frm1.frm2.dataGridView1.CurrentRow.Cells[0].Value.ToString();
            textBox2.Text = frm1.frm2.dataGridView1.CurrentRow.Cells[1].Value.ToString();
            textBox3.Text = frm1.frm2.dataGridView1.CurrentRow.Cells[2].Value.ToString();
            textBox4.Text = frm1.frm2.dataGridView1.CurrentRow.Cells[3].Value.ToString();


ile data grid viewde secili bilgiler gelir

update   set ile güncelleriz