private void button1_Click(object sender, EventArgs e)
        {
            QlyLinhKien f = new QlyLinhKien(Role, Name);

            AddToForm(f);
        }
        private void QuanLyLinhKien_Load(object sender, EventArgs e)
        {
            QlyLinhKien f = new QlyLinhKien(Role, Name);

            AddToForm(f);
        }