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c#reporting-servicesreport

Dynamically Load Embedded Resource Report Using Microsoft.Reporting.WinForms

How does one dynamically load a new report from an embedded resource? I have created a reporting project that contains a report as an embedded resource. I added a second report file and use the following code to switch reports:

this.reportViewer1.LocalReport.ReportEmbeddedResource = "ReportsApplication2.Report2.rdlc";
this.reportViewer1.LocalReport.Refresh();
this.reportViewer1.RefreshReport();

When this code executes, the original report remains visible in the report viewer.

I have also tried using

LocalReport.LoadReportDefinition

but had the same result.

Solution

  • The answer: you have to call 

    <ReportViewer>.Reset();

    prior to changing the value of ReportEmbeddedResource or calling LoadReportDefinition.

    After you do so, you'll also have to call 

    <ReportViewer>.LocalReport.DataSources.Add( ... );

    to re-establish the data sources.