主题：word文件套打 怎么实现代码控制双面打印呢？

当前代码如下：
 Dim e As RequestEventArgs = rq.e
 Dim cmd As SQL Command = rq.cmd
 Dim time As String =Format(Date.now,"yyyyMMddHHmmss")
 Dim tm As String  = ProjectPath & "Attachments\通知书.doc" '指定模板文件
 Dim f1 As String = ProjectPath & "Reports\通知书"& e.Values("创建人") & e.Values("guid") & time &".doc" '指定目标文件
 Dim f2 As String = ProjectPath & "Reports\通知书"& e.Values("创建人") & e.Values("guid") & time &".pdf" '指定目标PDF文件
 Dim wrt As New WordReport(tm,f1)
 wrt.AddDataTable("通知书","主数据源","Sel ect * from {通知书} where guid = '" & e.Values("guid") & "' ")
 wrt.Build()
 wrt.SaveToPDF(f2) '保存为PDF文件
 wrt.Quit() '退出
 
Dim Proc As New Process
Proc.File = f2
Proc.Verb = "Print" '指定动作
Proc.Start()