private void tampilanUtama_Load(object sender, EventArgs e)
        {
            beranda tab6 = new beranda();

            tab6.MdiParent = this;
            tab6.Show();
        }
        private void berandaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            beranda tab6 = new beranda();

            tab6.MdiParent = this;
            keluarForm();
            tab6.Show();
        }