C# reporting error in processing 'illegal path'

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I am trying to get reporting in C# to work. I'm trying to embed my rdlc file as such:

    var reportDataSource = new ReportDataSource("ProspectsDataSet", _allProspects);
ReportViewer.LocalReport.DataSources.Add(reportDataSource);

ReportViewer.LocalReport.ReportEmbeddedResource = "SdcDatabase.Modules.EnquiryModule.View.Reports.ProspectsReport.rdlc";
ReportViewer.ZoomMode = ZoomMode.PageWidth;
ReportViewer.RefreshReport();

The build action on the rdlc file itself is set to embedded resource and the copy to output directory set to copy always.

I have double checked and I'm certain that that is the correct namespace in the ReportEmbeddedResource string. However when I try to load the report I get this error:

An error occurred during local report processing. The definition of the report " is invalid.
An unexpected error occurred in Report Processing. The type initializer for 'Microsoft
.ReportingServices.ReportIntermiedateFormat.Persistence.IntermediateFormatVersion' threw an exception.
The path is not of a legal form.

What I have tried:

I have tried switching a few things around in the path, such as replacing '.' with '/' and '\' but so far I have not been able to get anything to fix this. I have also tried using LocalPath instead of EmbeddedResource but again I come across errors.

I have searched for this issue but haven't found anything to resolve my issue thus far.

Posted 7-Mar-17 21:42pm

DRD94

Updated 7-Mar-17 22:14pm

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Graeme_Grant · Answer 1 · 2017-03-07T22:14:00

Solution 1

This should help: Access Resources in WPF[^]

Posted 7-Mar-17 22:14pm

Graeme_Grant

Comments

DRD94 8-Mar-17 5:20am

Thanks for your answer Graeme. I have used this technique with Images, do you suggest I use a Uri for the rdlc file too?

Graeme_Grant 8-Mar-17 5:21am

For any embedded resource actually. :)

DRD94 8-Mar-17 5:25am

Even though the ReportEmbeddedResource only takes a string? I'm having to do this at the moment (it's still not working): ReportViewer.LocalReport.ReportEmbeddedResource = new Uri("pack://application:,,,/Modules/EnquiryModule/View/Reports/ProspectsReport.rdlc").ToString();

Graeme_Grant 8-Mar-17 5:26am

It depends if embedded resources are supported for that control.

DRD94 8-Mar-17 5:32am

It really does not want to work as an embedded resource. I'm going to try my luck with LocalReport.ReportPath to try a new approach.

Graeme_Grant 8-Mar-17 5:33am

Don't guess, look it up.

DRD94 8-Mar-17 5:35am

There seems to be scarce information on either solution. Nothing I have found so far has worked, hence this question.

Graeme_Grant 8-Mar-17 5:39am

reporting services - Display .RDLC report embedded in a DLL file - Stack Overflow[^]