private void buttonItem12_Click(object sender, EventArgs e)
 {
     FrmXuatKho frm = new FrmXuatKho();
     CreateTab(stcMenu, "Xuất Kho", "stiXuatKho", "stcpXuatKho", frm);
 }
        private void buttonItem12_Click(object sender, EventArgs e)
        {
            FrmXuatKho frm = new FrmXuatKho();

            CreateTab(stcMenu, "Xuất Kho", "stiXuatKho", "stcpXuatKho", frm);
        }