Hi Colin,

There are no such plans. RadHtmlChart is a server wrapepr for the Kendo Chart widget and as such operates only on the client-side. The server integration provides:
- ASP markup for defining the chart
- ability to create the chart in the code-behind (i.e., C# or VB)
- serialization of declarative series items or data source to a JSON literal that is passed to the Kendo Chart widget

Thus, server events are not going to be available in this control.

What I suggest is that you initiate a postback like shown in this demo: http://demos.telerik.com/aspnet-ajax/htmlchart/examples/drilldownchart/defaultcs.aspx