InstanceReportSource Not Working, Viewers says No Report.

2 posts, 0 answers
  1. Aubrey Ivan
    Aubrey Ivan avatar
    26 posts
    Member since:
    Oct 2019

    Posted 31 Oct 2019 Link to this post

    Here is my controller which I am using a instance report


            public ActionResult Index()
                var objDts = new ObjectDataSource();
                objDts.DataSource = new Sample();
                objDts.DataMember = "GetSample";

                var orgSampleReport = new OrganisationSample();
                orgSampleReport.DataSource = objDts;

                var reportSource = new Telerik.Reporting.InstanceReportSource();
                reportSource.ReportDocument = orgSampleReport;

                return View(reportSource);


    and here is the logic that I am puling from 

        public class Sample
            public int Id { get; set; }
            public string Name { get; set; }
            public Sample GetSample()
                var sample = new Sample
                    Id = 1,
                    Name = "Sample 1"

                return sample;


    whenever I run the program and go to the report viewers it shows "No Report"

  2. Todor
    Todor avatar
    456 posts

    Posted 04 Nov 2019 Link to this post

    Hi Aubrey Ivan,

    The Html5 Viewer uses Telerik Reporting REST Service to deliver reports - check HTML5 Report Viewer and Reporting REST services. The client-side reportSource is a property of the viewer that contains a report identifier and collection with parameter values. It cannot contain a report instance. The message is received because InstaceReportSource is not supported by the Html5 Viewer (including its MVC wrapper).

    If you need to instantiate a report, for example, in order to set its DataSource, you need to do this in a Custom Report Resolver in the REST Service. The Resolve() method of the resolver will receive as an argument the property. With the MvcViewer in the case of TypeReportSource, this will be the assembly qualified name of the report class, i.e. the TypeName. You need to instantiate the report based on this information and set its data source as required. Then you may return the modified report wrapped in an InstanceReportSource from the Resolve method - it will be passed to the Reporting engine. Hence, the logic for assigning a data source to the Report should be moved to the Resolve method of a custom report resolver.

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