ObjectDataSource with TRDP file produces empty report

[Tony]

I am programmatically generating a PDF from a TRDP file which uses an ObjectDataSource.  When I preview my report using default values in the standalone report designer, the data is displayed correctly.  When I set the parameters programatically and render the report in code, no data is displayed.  Here is the code to generate the PDF.  Appreciate any help.

Telerik.Reporting.UriReportSource reportSource =
    new Telerik.Reporting.UriReportSource
    {
        Uri = "Reports\\MyReport.trdp"
    };

reportSource.Parameters.Add(new Telerik.Reporting.Parameter("batchId", batchId));
reportSource.Parameters.Add(new Telerik.Reporting.Parameter("accession", accession));

Telerik.Reporting.Processing.ReportProcessor reportProcessor = new Telerik.Reporting.Processing.ReportProcessor();
System.Collections.Hashtable deviceInfo = new System.Collections.Hashtable();

var result = reportProcessor.RenderReport("PDF", reportSource, deviceInfo);

 

[Tony]

I found the problem.  The assembly containing the type of the ObjectDataSource was not referenced or added in the Telerik.Reporting configuration section.

[Andreas]

Hi Tony, i am struggling to get ObjectDataSource working in stand alone designer. How did you get your ObjectDataSource working? In which config-file was the reference missing? Best Regards

[Dimitar]

Hi Andreas, we discussed this issue in a separate ticket and you were able to find out the cause for it and resolve the problem, I will now share the possible information in this forum thread so that we can people with similar issues.

The problem was regarding the ObjectDataSource's incompatibility with .NET Core assemblies. The Standalone Report Designer is a WPF application built against .NET Framework 4.0. For that reason, it cannot load and resolve classes from assemblies built against .NET Standard 2.1, .NET Core, and .NET5. You can see the .NET Standard compatibility chart which explains how and when the assemblies can be loaded in different framework versions.