主题：excel报表指定打印机直接打印，不进入excel

Dim Book As New XLS.Book(ProjectPath & "Attachments\订单.xls")
Dim fl As String = ProjectPath & "Reports\订单.xls"
Book.Build() '生成细节区
Book.Save(fl) '保存工作簿
Dim Proc As New Process '打开工作簿
Proc.File = fl
Proc.Start()

上面代码中如何不进入EXCEL直接发送到指定打印机直接打印啊