What is the best report viewer for Crystal Reports in ASP.Net using vb.net/C#

Hello Guys,

Can I have a helping hand for this.,
I have a Crystal Report files that I want to view everytime the user clicks the generate button.

here is my code....

Note that I currently exporting my report file into a PDF file using this...
Dim rptBlank As New Report Document
rptBlank As New report_Sample (Sample_ReportFile.rpt = Crystal Report File)

With rptBlank
                            .ExportOptions.ExportDestinationType = ExportDestinationType.DiskFile
                            .ExportOptions.ExportFormatType = ExportFormatType.PortableDocFormat
                            diskDestination.DiskFileName = TempPath & empDtls(3) & "\" & filName
                            .ExportOptions.ExportDestinationOptions = diskDestination
                            .SetParameterValue("@a", "123")
                            .Export()
End With

' Outputing on my embed tag that the application type is PDF.

   embedPdf.Src = "Sample_Generated_PDF_File.pdf"

But I think There should be a safe way to do it and much faster way.,

Can I have an advice on this?

Thank You in advance.