WPF DataGrid ComboBox Column

[Kevin Marois]

I'm trying to add a combobox column to a DataGrid:

I don't get any errors or binding problems, but I don't see any data in the combo. The LumberSizes list has data in it.

What's the right way to do this?

If it's not broken, fix it until it is.
Everything makes sense in someone's mind.
Ya can't fix stupid.