All Telerik .NET tools and Kendo UI JavaScript components in one package. Now enhanced with:
You can add your own content to the treeview. Just add Encoded = false and put to the Content = "<input type='button' name='button' id='your_id' />
Encoded false means in that case that Content will have button instead of text <input type etc.
Check: example and under 'subItem.Add()' put previously mentioned settings and that should do it.
-Tatu