private void btn_kembali_Click(object sender, EventArgs e)
        {
            panel_content.Controls.Clear();

            pengembalian home = new pengembalian(this);

            home.TopLevel = false;
            panel_content.Controls.Add(home);
            home.Show();
        }
 public pengembalian_form(pengembalian layout)
 {
     data2 = layout;
     InitializeComponent();
 }