试试这样
For Each R2 As Row In Tables("组货计划窗口_出库明细附表").GetCheckedRows
If r2("库位")<>Nothing Then
Dim Book As XLS.Book
book = New XLS.Book(ProjectPath & "Attachments\回执单模板.xls")
Dim fl As String = ProjectPath & "Reports\出库开单.xls"
Book.Build() '生成细节区
Book.Save(fl) '保存工作簿
Dim App As New MSExcel.Application
Dim Wb As MSExcel.WorkBook = App.WorkBooks.Open(fl)
Dim Ws As MSExcel.WorkSheet = Wb.WorkSheets(1)
ws.Print
App.Quit
R2("已打印")=True
Else
MessageBox.Show("请选择库位后再打印!","提示:")
End If
R2.Checked =False
Next