The chart renders entire on the client-side, so that in order to export it you should initially render it in the browser. That being said I can suggest the following:
- Export the chart on the client-side
and then send the image to the server
- Render the chart on the client-side and then send the rendered image to the server where you can use a third party software to export it. Such an example with the free inkScape software is available here - http://www.telerik.com/support/code-library/exporting-radhtmlchart-to-png-and-pdf
. You can also find useful the Phantom JS
library that lets you render a browser on the server and export the page.
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