How to access sublayer of a basemap in arcobjects?

Question

ILayer layer = mapControl.get_Layer(1); //layer 1 is usa_base_map 

I have an ILayer, now I want to access and turn on and off various sublayers like the street layer or the railroad layer. Can you tell me how to access these layers?

Answer 1

I think you'll want to cast your group layer to an ICompositeLayer (linky).