Nesting a RadioButtonList

Question

Hello, I am trying to create a ASP.NET page using C# and I can't seem to figure out this problem.

I'm using an XML file to dynamically create a radiobuttonlist. However, some of those buttons need to be nested.

I thought I would be able to do something like this: 

 myRadioButtonList.Controls.Add(nestedRadioButtonList);

 But nothing happens.

Any help at all would be great!

Thanks,

ADR