主题：冻结

If MessageBox.Show("是否打开导出表?","确认",MessageBoxButtons.OKCancel,MessageBoxIcon.Question) =DialogResult.OK Then

    Dim book1 As new xls.book( "d:\集团汇总.xls" )

    book1.sheets.SelectedIndex = 1

    Dim Sheet As XLS.Sheet = Book1.Sheets(0)

    Sheet.Cols.Frozen = 2

    book1.save( "d:\集团汇总.xls" )

    Dim Proc As New Process

    Proc.File = ( "d:\集团汇总.xls" )

    Proc.Start()

End If

上述代码什么在打印时不能冻结前两列？即是工作表前两列在多页打印时，都显示。