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

            AddToForm(f);
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            QlyThongTinKhachHang f = new QlyThongTinKhachHang(Role, Name);

            AddToForm(f);
        }