Is it able to extract certain sub tree after calling TransformToTree?

[Snailya]

hi guys,
I want to filter a tree to get only the subtree that meets the certain id. I've tried to call Filter() after TransformToTree, but it returns nothing.
I currently came up a reluctant way that is firstly filter out items that belong to that subtree then call TransformToTree. But I wonder if there's other amazing Dynamic way to do it?

[Snailya]

I've figured out the correct way is to create a predicate function for TransformToTree.
The default predicate for the TransformToTree example is

Observable.Return((Node<EmployeeDto, int> node) => node.IsRoot);

For my situation, is to build a predicate based on the id of the node.

var categoryPredicate = this.WhenAnyValue(x => x.ElementName)
                            .Select((string name) => Node<EmployeeDto, int> node) => service.GetValidIds(name).Contains(node.Id));

[JakenVeina]

Sorry if it seemed like you were being ignored. I know absolutely nothing about the tree APIs myself, so I figured I'd let others answer, and then I forgot about this post. Otherwise, I'd have done some reasearch.

Glad you've got it figured out, thanks for the answer.

[Snailya]

Never mind.
The dynamic data is amazing. I'm really grateful that you guys paying time to maintain and imporve it.