MultiColumn​TreeList and DataGrid

I am using a free opensource class from a company that I will not name (even if it is RadiantQ) that I like a lot.  It has this cool MuttiColumnTreeList control that is a combination of a tree control and a datagrid.  It comes with an example code that you can look at and everything.  It is pretty cool. It is inherited from the DataGrid class.

The problem is that I am kind of new to databinding on this level and so I would like to just go ahead and write some code that forces the data that I have gathered from another class into the  control.

So I looked online for how to do that for a DataGrid class and the information is not easily available.  Can anyone help?

@complete: Is this WPF? Databinding is your friend. Learn it and things become 100x easier.

Otherwise, you can force data in through the code-behind. Datagrids have collections of rows.

The WPF sdk has a tree list example that is pretty good, and shows you why it is acres and acres better than winforms

I want to see this WPF sdk.  I wonder how I missed it.  Is it downloadable?