AutoExpand treeview in WPF

Question

Is there a way to automatically expand all nodes from a treeview in WPF? I searched and didn\'t even find an expand function in the treeview property.

Thanks

Answer 1

Carlo's answer was better because it opens all levels

This improves upon that example with a little more concise code example.

    private void ExpandAllNodes(TreeViewItem treeItem)
    {
        treeItem.IsExpanded = true;  
        foreach (var childItem in treeItem.Items.OfType())
        {
                ExpandAllNodes(childItem);
        }
    }

Call it by using this line of code

TreeViewInstance.Items.OfType().ToList().ForEach(ExpandAllNodes);