How to show expand button?

[Bruno Michels]

I am building a tree from a list.

tree.DataValueField = "ID";
tree.DataTextField = "Name";
tree.DataSource = list;   // list = new List<Person>(); // class Person { ID; Name; }
tree.DataBind();

And the tree is not showing the expand button. (.rtPlus)

How can I force the tree to show the expand button? (I will load children on demand)

[Helen]

Hello Bruno Michels,

Please review the following demo and related resources how to bind RadTreeView.

Best wishes,
Helen
the Telerik team