Your cell factory’s updateItem(…) needs to handle the case where the cell is empty. This will be exactly the scenario when an item is removed (or becomes empty because a node in the TreeView was collapsed) and the cell that previously showed an item is reused as an empty cell: public ListCell<T> call(final ListView<T> param) … Read more
I realise this has already had an answer accepted, but I put this together to solve the problem. It uses a similar idea to Delta’s solution, but without the need to subclass the TreeView: public class BindableSelectedItemBehavior : Behavior<TreeView> { #region SelectedItem Property public object SelectedItem { get { return (object)GetValue(SelectedItemProperty); } set { SetValue(SelectedItemProperty, … Read more
You need to move the loop through attributes out of the loop through child nodes: private void AddNode(XmlNode inXmlNode, TreeNode inTreeNode) { // Loop through the XML nodes until the leaf is reached. // Add the nodes to the TreeView during the looping process. if (inXmlNode.HasChildNodes) { //Check if the XmlNode has attributes foreach (XmlAttribute … Read more