Add Update Delete in Tree Like Collection

Question

I have a tree stucture like this

public class CustomObject
    {
        public int Property1{get;set;}
        public string Property2{get;set;}
        public bool IsTrue{get;set;}
        public List<CustomObject> Items{get;set;}
    }

Now I have Collection like List and I want create a new collection from this where IsTrue == true.

Secondly I need to add new Property to the stucture at specific node and similary delete and Update the nodes.

Any suggestion is greatly appreciated.

You should add some mock code to explain what exactly you are trying to do. The second part of the question is a bit vague too. — Manfred Radlwimmer, Apr 28 '16 at 12:44
Suppose i have collection like this Item1 ---> First Item In Collection Item11 -----> Fisrt Item1 Collection Item12 -----> Second Item1 Collection Item21 ----> First item in Item2 Collection and so on Item23 Item2 ---> Second item in collection ... So On I want to add items at any one of the nodes or update any node and so on — Crispin, Apr 28 '16 at 12:45
Yes, that part is mentioned in the question. Now what do you want to do with that collection? Whats stopping you from Deleting / Updating the Nodes? What's the problem? You got a List<> of your Elements. Lists support _Remove_. The Values are not readonly properties so updating shouldn't be a problem either. — Manfred Radlwimmer, Apr 28 '16 at 12:48

score 0 · Answer 1 · answered Apr 28 '16 at 12:50

First

Now I have Collection like List and I want create a new collection from this where IsTrue == true.

var listWithIsTrueOnly = ListCustomObject.Where(x => x.IsTrue).ToList()

And now for your list you can use Add, AddRange, Remove, RemoveAt ...

But still something curious. In your object, you have a list of object. Is it normal?

score 0 · Answer 2 · edited May 23 '17 at 12:23

Items.Where(x => x.IsTrue).ToList().

Over the list you can perform crud operations.

If you want to add an extra property at specific node, I suggest you consider to use an ExpandoObject instead, so you can add or remove the properties at runtime.

Check this links :

Dynamically Add C# Properties at Runtime

https://msdn.microsoft.com/en-us/library/system.dynamic.expandoobject(v=vs.110).aspx

Add Update Delete in Tree Like Collection

2 Answers2