CODEWITHSUNDEEP
c#treeviewclone
Stanislav Kutyavin
Stanislav Kutyavin

Reputation: 33

Copy TreeView node with object tag

I have a TreeView. Its TreeNodes have a TreeNode.Tag property of type InfoForNode . It contains field public DataGridViewRow[] Properties where I store all information about node.

Now I want to copy this node (with all its properties from Node.Tag) and paste it in the same TreeView. I tried to use TreeNode.Clone() method:

foreach (var node in TreeQuery.SelectedNodes)
            {
                _copiedNodes.Add((TreeNode)node.Clone());
            }

It works, but copied and original nodes point at the same instance of DataGridViewRow[] Properties (Because its a Reference type and Clone() performes a shallow copy of a node).

Please explain, how can I get a proper copy in this case?

Upvotes: 1

Views: 493

Answers (1)

oppassum
oppassum

Reputation: 1765

The easiest way would be to do this manually.

        foreach (var node in TreeQuery.SelectedNodes)
        {
            TreeNode newNode = (TreeNode)node.Clone();
            DataGridView[] oldProperties = (DataGridView[])node.Tag;
            DataGridView[] newProperties = new DataGridView[oldProperties.Length];
            for(int i = 0; i < oldProperties.Length; i++)
            {
                newProperties[i] = oldProperties[i].Clone(); //or whatever copy method works for this
            }
            _copiedNodes.Add(newNode);
        }

This gives you complete control over how you copy the tag data.

Upvotes: 1

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