Export to MemoryStream for with perfect excel export

hi,

Please i have this code in asp.net, and want to export to excel through a memorystream, it works, but the excel that is exported is not well formated, please how can i get a perfect excel export that the gridlines are well arranged, please see my code below:

Protected

Sub ImgBtExcel_Click(ByVal sender AsObject, ByVal e As System.Web.UI.ImageClickEventArgs) Handles ImgBtExcel.Click

 

Dim objReportOptions As ExportOptions = objReports.ExportOptions

Dim objDiskFileDestinationOptions AsNew DiskFileDestinationOptions()

Dim objFormatTypeOptions AsNew ExcelFormatOptions

Dim strFileName AsString = "WatchDog"& Now.ToLongDateString & ".xls"

Dim oStream As System.IO.MemoryStream

Try

           

If strFileName IsNotNothingThen

 

                objReportOptions.ExportDestinationType = ExportDestinationType.DiskFile

                objReportOptions.ExportFormatType = ExportFormatType.Excel

                objFormatTypeOptions.ExcelUseConstantColumnWidth = False

                objReportOptions.DestinationOptions = objDiskFileDestinationOptions

                objReportOptions.FormatOptions = objFormatTypeOptions

 

                oStream =

DirectCast(objReports.ExportToStream(objReportOptions.ExportFormatType), IO.MemoryStream)

                Response.Clear()

                Response.Buffer = True

                Response.ContentType = "application/vnd.ms-excel"

                Response.AddHeader("Content-Disposition", "attachment;filename=" + strFileName)

                Response.BinaryWrite(oStream.ToArray())

                Response.[End]()

EndIf
       

Catch ex As Exception

       

EndTry

   

EndSub

 

Thanks

Tim