Tek4 ASP.NET Exporting Module for Highcharts JS (http://highcharts.com/). Version 1.0.3.0 (December 5, 2014) Copy the three .dll files from the demo website /bin ...

It's truly unfortunate that ASP.NET made it so very easy to do. You should also check out ASP.NET MVC3; once you really get your head around it, the WebForms model becomes much more obviously broken.