Adding a PDF file created by Crystal as an attachment

[redheadpgr]

I'm using the following code to create a PDF file from a Crystal Report.

Dim oRpt As New CrystalReport1
Dim DiskOpts As CrystalDecisions.Shared.DiskFileDestinationOptions = New CrystalDecisions.Shared.DiskFileDestinationOptions
oRpt.ExportOptions.ExportDestinationType = CrystalDecisions.[Shared].ExportDestinationType.DiskFile
oRpt.ExportOptions.ExportFormatType = CrystalDecisions.[Shared].ExportFormatType.PortableDocFormat
filepath = "c:\crystal\report.pdf"

DiskOpts.DiskFileName = filepath
oRpt.ExportOptions.DestinationOptions = DiskOpts

oRpt.Export()

dim myMessage as New MailMessage
myMessage.To = "SomeEmail@somecompany.com"
myMessage.From = "Me@mycompany.com"
myMessage.Body = "See attached file"

myMessage.Attachments.Add(New MailAttachment(filepath, MailEncoding.UUEncode)

SmtpMail.SmtpServer = "myEmailServer"
SmtpMail.Send(myMessage)

This method works fine but I'm wondering if there is any way I can bypass exporting the file to disk? I still need to have the pdf file as an attachment.

Thanks.