将列表框中的列表框绑定到可观察的集合？最好的方法？

In xaml, I have a listbox with a grid in it with 1 row and 2 columns. In the first column I have a name, and in the second column I have another listbox...I have the first listbox bound to an observable collection of Enclosure items. In the Enclosure class, I have another observablecollection of Servers (another class). I am trying to bind this to a listbox as well. The EnclosureID is working and updating properly as I add items to the observable collection. However, I am not so sure how to get the Slist to bind to the listbox I have within my other listbox. Anyone have any ideas? Is there another approach I can use?In xaml, I have a listbox with a grid in it wit