How can i Mail and Fax Crystal Report in the PDF Format.

I'm exporting the Crystal report to pdf file using Export, in a windows based application.

I used the following code for mailing:

Dim rpt As ReportDocument = New ReportDocument

Dim crrpt As ExportOptions = New ExportOptions

Dim dstopt As New MicrosoftMailDestinationOptions

Dim frmtopt As New PdfRtfWordFormatOptions

dstopt.MailToList = "To Address here"

dstopt.MailSubject = "Mail Subject here"

dstopt.MailMessage = "Main Message here"

But it gives me error at last line as:

Plz, anyone can help me.