You can export RadChart image in RadGrid to PDF format only. Please note that RadGrid cannot embed images in Excel and Word formats. More information is available in Exporting RadChart to PDF
code library. You may also find useful this
forum threads on the matter.
Regarding the exporting of the RadHtmlChart - the control renders entirely on the client as SVG, so that it is not available for exporting on the server. You can, however, send the SVG image to the server and use there a tool that can do the export. Please refer to this
code library for details.
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