private void btnHSXoa_Click(object sender, EventArgs e)
{
var db = new CSDL();
if (MessageBox.Show("Bạn muốn xóa học sinh " + dgvHocSinh.CurrentRow.Cells["TenHS"].Value.ToString() + " ?", "Warning!!!", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) == DialogResult.Yes)
{
db.del_dataHS(dgvHocSinh.CurrentRow.Cells["MaHS"].Value.ToString());
}
// Hien thi mess thong bao
LoadHS();
}
