private void btnSua_Click(object sender, EventArgs e)
{
var frm = new frmAEContact(dgvContacts, "Sửa Dữ Liệu", dgvContacts.CurrentCell.RowIndex);
frm.ShowDialog();
}
private void btnThem_Click(object sender, EventArgs e)
{
var frm = new frmAEContact(dgvContacts, "Thêm Dữ Liệu");
frm.ShowDialog();
}