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        一般来说,在一些大型OA中最常用,而且也比较难的部分莫过于一些报表生成,压缩,下载等操作了,下面我就将一些示例代码总结一下:

        通过Excel模板生成Excel报表代码:
        首先进行如下操作,以确保网络用户拥有创建报表的权限:Microsoft Excel 应用程序-》右键属性-》安全-》全部改为自定义加入.NET用户权限。
        Dim mClsExcel As New Reportforms.DataAccess.clsExcel
        Dim mFromPathFile As String
        Dim mToPathFile As String

        mFromPathFile = Server.MapPath("1.xls")
        mToPathFile = "2.xls"

        If File.Exists(mToPathFile) = True Then
            File.Delete(mToPathFile)
        End If
        File.Copy(mFromPathFile, mToPathFile)
        File.SetAttributes(mToPathFile, FileAttributes.Archive)

        Dim ds As DataSet = New DataSet

        mClsExcel.OpenFile(mToPathFile )
            Try
                ds = GetDate()
                mClsExcel.SelectSheet(1)
                mClsExcel.SetExcelCellValue("A", "1", "单位数量")
                mClsExcel.SetExcelCellValue("A", "2", "资料年份:" & SBDate)
                mClsExcel.SetExcelCellValue("A", "3", "填报单位:" & UnitName & "(" & UnitCode & ")")

                If mClsExcel.Addcenter(ds, "10", "C", 1) = True Then

                End If

                ds.Dispose()
                ds = Nothing

            Catch ex As Exception

            End Try
        mClsExcel.CloseFile()

         压缩报表代码:
        Shell(Server.MapPath("rar.exe") & " a -ep " & "1.rar" & " " & "", AppWinStyle.Hide, True)

        报表下载代码:
        System.Web.HttpContext.Current.Response.Redirect("1.rar")