Problem displaying as PDF

[Andy Green]

Hi

I'm having trouble getting the code example http://www.telerik.com/help/reporting/faq-display-pdf-browser.html


This line - Dim result As Telerik.Reporting.Processing.RenderingResult = reportProcessor.RenderReport("PDF", typeReportSource, Nothing)
throws the following error:

Value cannot be null.
Parameter name: type

Andy

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load

    ExportToPDF("NoiseTestBlanks.trdx")

End Sub

Sub ExportToPDF(ByVal reportToExport As String)

    Dim reportProcessor As New Telerik.Reporting.Processing.ReportProcessor()
    Dim typeReportSource As New Telerik.Reporting.TypeReportSource()

    ' reportToExport is the Assembly Qualified Name of the report
    typeReportSource.TypeName = reportToExport

    Dim result As Telerik.Reporting.Processing.RenderingResult = reportProcessor.RenderReport("PDF", typeReportSource, Nothing)

    Response.Clear()
    Response.ContentType = result.MimeType
    Response.Cache.SetCacheability(HttpCacheability.Private)
    Response.Expires = -1
    Response.Buffer = True
    'Uncomment to handle the file as attachment
    'Response.AddHeader("Content-Disposition", String.Format("{0};FileName=""{1}""", "attachment", reportToExport))
    Response.BinaryWrite(result.DocumentBytes)
    Response.End()

End Sub

[Peter]

Hello Andy,

The used example is based on report definition created with Visual Studio. If you want to use a trdx (report definition created with the standalone Telerik Report Designer) you have to utilize UriReportSource as shown in the following updated code snippet. Just make sure that the report definition is available in the application bin or update the URI accordingly.

Protected Sub Page_Load(sender As Object, e As EventArgs) Handles Me.Load

    ExportToPDF("NoiseTestBlanks.trdx")

End Sub

Sub ExportToPDF(ByVal reportToExport As String)

    Dim reportProcessor As New Telerik.Reporting.Processing.ReportProcessor()
    Dim reportSource As New Telerik.Reporting.UriReportSource()

    reportSource.Uri= reportToExport

    Dim result As Telerik.Reporting.Processing.RenderingResult = reportProcessor.RenderReport("PDF", reportSource, Nothing)

    Response.Clear()
    Response.ContentType = result.MimeType
    Response.Cache.SetCacheability(HttpCacheability.Private)
    Response.Expires = -1
    Response.Buffer = True
    'Uncomment to handle the file as attachment
    'Response.AddHeader("Content-Disposition", String.Format("{0};FileName=""{1}""", "attachment", reportToExport))
    Response.BinaryWrite(result.DocumentBytes)
    Response.End()

End Sub

Regards,
Peter
Telerik