BarTender 打印二维码

BarTender.Application btApp= new BarTender.Application(); //初始化需要5秒
var btw = GlobalVariable.btApp.Formats.Open(Application.StartupPath + "\\aaa.btw");
                btw.SetNamedSubStringValue("PackCnt", lblOKCnt.Text);
                btw.SetNamedSubStringValue("ProdLine", tslProdLine.Text);
                btw.SetNamedSubStringValue("Material", tslMaterial.Text);
                btw.SetNamedSubStringValue("Customer", lblCustomer.Text);
                string strQRCode=tslProdLine.Text + "|" + tslBanCi.Text + "|" 
                    + GlobalVariable.UserName.ToUpper() + "|" + tslMaterial.Text + "|" 
                    + DateTime.Now.ToString("yyyyMMdd") + "|" + (CurrentLayer+1).ToString("00");
                btw.SetNamedSubStringValue("strQRCode", strQRCode);

                BarTender.Messages barTenderMsg;
                btw.Print("aaa",true,2000,out barTenderMsg);