I always manage to get the fun ones.  Infragistics, Telerik, they all hate me.  Well, thats half true, I can force the Infa controls to do stuff most of the time -- haven't figured out how to make these Telerik.  So I'm working with winforms RadTreeView.  Seems simple enough.  Has a object-ed datasource  along with various things like "datamember" "displaymember" etc, all the things you'd expect.  Checkin out their site, you can use business objects, datasets, datatables, all sorts of junk -- what could possibly go wrong?

Well, we have one already in use, works just fine but we had to manually build the "nodes" for the control.  I think its a royal bastardization BUT it works.  So, thinking I'm mr. slick, I toss in a collection (a list) into the datasource, tell it that "object.property" is where the goods are and ...build, load, nada.  Hmm ok, soooo lets try a dataset.  I try using a helper class that serializes the thing into a nice neat dataset and ...nada again.  Hmm ok fine.  I'll build it by hand, using the nodes as cumbersome as it is -- nada.  Now, throughly confused, I think to myself "why not toss it into the one that works? see what happens" -- all the above methods work ...in the existing view. 

I've left a post on the Telerik site hoping for a reply along the lines of "hey, you're a dummy, all you have to do is this" and presto, it'll work ...but until then, I'm con-freaking-fused.