private void bt_doimatkhau_ItemClick(object sender, ItemClickEventArgs e)
{
frmDoimatkhau frm = new frmDoimatkhau(dt);
frm.Show();
}
private void bar_DoiMatKhau_ItemClick(object sender, ItemClickEventArgs e)
{
frmDoimatkhau frm = new frmDoimatkhau();
frm.Show();
}