DevExpress XtraReports v11.2中PrintingSystem属性不能赋值怎么办

PrintingSystem CreateReport(GridControl gridControl)
        {
            PrintingSystem ps = new PrintingSystem();
            PrintableComponentLink link = new PrintableComponentLink(ps); //{ Component = gridControl };
            link.Component = gridControl;
            link.CreateDocument();
            return link.PrintingSystem;
        }
        private void button1_Click(object sender, EventArgs e)
        {
            PrintingSystem ps = CreateReport(gridControl1);
            ps.PrintDlg();
        }