主题：打印预览代码

Dim Book As New XLS.Book(ProjectPath & "Attachments\出库单.xls")
Dim fl As String = ProjectPath & "Reports\出库单.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.Verb = "Print" '指定动作
Proc.Start()

如何将以上直接打印代码改为打印预览代码？