How do I set a DataTemplate for a WPF TreeView to display all Elements of an List?

Question

I\'d like to visualize the following data structure using TreeViews in WPF:

class MyDataContext
{
    ICollectionView Outers {get;set;}
    //...
}

class Ou         


        

Answer 1

I used the page Mateusz mentioned (HierarchicalDataTemplate) and after reading the answer to this question: Bind Collection to StackPanel I found a solution that did what I wanted:

Here the players (level 3) are on the same row as the team (level 2):