Hello Shahbaz,
I am afraid it would not be possible to use RadChart/RadGridView for Silverlight within Telerik reporting at the moment. While the Silverlight Report Viewer is a Silverlight application, it only displays the report as generated on the server. Within the report you can take advantage of the Telerik Reporting Items described in details
here.
Best regards,
Ves
the Telerik team
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