Question

I have a TreeView which will be populated with some Nodes. The problem is, this nodes can have different Tag and Name property but some of them can have the same Text property.

I want to have only one node from each of above nodes, so the TreeView will have unique nodes by Text.

I am trying to make a list of all nodes then filter them, then add the new List to the TreeView. Here is my approach, and I commented the line which does not compile.

        //Remove Duplicated Nodes
        List<TreeNode> oldPinGrpNodes = new List<TreeNode>();
        List<TreeNode> newPinGrpNodes = new List<TreeNode>();
        TreeNode tempNode;


        foreach (TreeNode node in tvPinGroups.Nodes)
        {
            oldPinGrpNodes.Add(node);
        }

        foreach (TreeNode node in oldPinGrpNodes)
        {
            if (newPinGrpNodes.Contains(node.Text)) continue; //this does not compile!
            //How to do a check in the IF statement above?

            //Continue with adding the unique pins to the newList
        }

Or if you have any better idea please let me know!

Answer 1

have you tried the following Linq query, instead of your check?

if (newPinGrpNodes.Any(n => n.Text == node.Text)) continue;