private void button2_Click(object sender, EventArgs e)
{
int mabenhnhan = Convert.ToInt32(dataGridView1.Rows[0].Cells[0].Value);
string ten = dataGridView1.Rows[0].Cells[1].Value.ToString();
int namsinh = Convert.ToInt32(dataGridView1.Rows[0].Cells[2].Value);
string diachilienlac = dataGridView1.Rows[0].Cells[3].Value.ToString();
int sdt = Convert.ToInt32(dataGridView1.Rows[0].Cells[4].Value);
string trieuchungbenh = dataGridView1.Rows[0].Cells[5].Value.ToString();
Console.Write("ten:" + ten);
TiepTan.updateBenhNhan(conn, mabenhnhan, ten, namsinh, diachilienlac, sdt, trieuchungbenh);
}
