The Kendo UI code runs on the client, even when the MVC helpers are used. What they do is render the initialization scripts for the widgets on the client (explanation available here
). This being said, there is no server-side representation of the Sparkline available.
One possibility would be to generate the Sparkline on the client and export it to an image format
method is available for the Sparkline). Then, send the image to the server for further use. Possible implementation has been shown in this forum post