Report error - There was an error reflecting type 'Telerik.Reporting.Report'

2 posts, 0 answers
  1. Andy Green
    Andy Green avatar
    342 posts
    Member since:
    Aug 2008

    Posted 17 Aug 2012 Link to this post

    I'm in a bit of a muddle here, these reports worked fine, until I upgraded to the latest Reporting controls. Then I had some DLL issues and ended up uninstalling and re installing again.

    The reports sit in a folder and are XML files.
    These are deserialised for viewing

    We are now getting the error - There was an error reflecting type 'Telerik.Reporting.Report'

    This is the code that doe the de serialise:
    'Create an XML reader object from the updated string
    Using xmlReader As System.Xml.XmlReader = System.Xml.XmlReader.Create(New System.IO.StringReader(xmlString))
        'Create the report object and assing it the deserialised report definition
        Dim xmlSerializer As New System.Xml.Serialization.XmlSerializer(GetType(Telerik.Reporting.Report))
        Dim report1 As New Telerik.Reporting.Report
        report1 = xmlSerializer.Deserialize(xmlReader)
        report1.Report.ReportParameters(0).Value = imagePath
        report1.Report.ReportParameters(1).Value = Session("User_GUID").ToString
        'Assing the report object to the report viewer
        ReportViewer.Report = report1
    End Using

    I know its not the latest good practice but changing the serialiser to this

    Dim xmlSerializer As New Telerik.Reporting.XmlSerialization.ReportXmlSerializer()
    Dim report As Telerik.Reporting.Report = DirectCast(xmlSerializer.Deserialize(xmlReader), Telerik.Reporting.Report)

    Gives the new error: - An error has occurred during xml serialization. The xml serializer cannot resolve type with name:

    Searching the forum doesn't return any results, so guessing this is a new problem.

  2. Steve
    Steve avatar
    10941 posts

    Posted 20 Aug 2012 Link to this post

    Hello Andy,

    With the introduction of the standalone report designer and the new Report Sources, it was necessary that we implement our own serialization/deserialization mechanism, so that we no longer use the serialization mechanism of .NET. The XML serialization/deserialization of report definitions is now achieved through the dedicated ReportXmlSerializer class, for more information refer to the Serializing Report Definition in XML help article.

    Please note that the serialization has changed quite a bit, so if the serialization of the reports has been done with an older version, it is possible that it is no longer valid. Please serialize your reports with the new serializer to resolve such problems.

    We apologize for the temporary inconvenience.

    All the best,
    the Telerik team

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