I have created a vb class to render HTML based on properties of the dhtmlChart object. The generated HTML can be parsed to a web control or saved to a file to display the dhtmlxChart . This is based on how far I have learned and understood the object itself. This is indeed a very impressive product and I love it!
If you want a c# version you can use SharpDevelop and convert the vb class to c#. The class is hosted here… aspnetdhtmlxchartclass.codeplex.com/