private void bt_tao_moi_NCC_Click(object sender, EventArgs e)
{
flag_ncc = true;
frm_CTNCC formCT_ncc = new frm_CTNCC();
formCT_ncc.ShowDialog();
lam_moi();
}
private void lv_list_ncc_MouseDoubleClick(object sender, MouseEventArgs e)
{
flag_ncc = false;
frm_CTNCC formCT_ncc = new frm_CTNCC();
formCT_ncc.ShowDialog();
lam_moi();
}