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Duplicating the contents of a treeView

Hello,

I have 2 treeView controls on my form. Can you please tell me how can I copy all the nodes with the same structure from treeView1 to treeView2?

Note: I'm using .NET 2005.

Your help would be greatly appreciated.

Angry Coder Thursday, July 13, 2006 7:26 PM

You need to clone all the top-level nodes. This will do what you want:

destinationTreeView.Nodes.Clear();
foreach (TreeNode node in sourceTreeView.Nodes)
{
 TreeNode newNode = node.Clone() as TreeNode;
 destinationTreeView.Nodes.Add(newNode);
}

Peter Ritchie Monday, July 17, 2006 6:27 PM

This thread is off topic for the Visual C# General forum, moving to Windows Forms Genera.

Peter Ritchie Thursday, July 13, 2006 9:09 PM

tv.Nodes.CopyTo(MyNodeArray, 0)

tv1.Nodes.AddRange(MyNodeArray)

DMan1 Monday, July 17, 2006 6:00 PM

DMan1 wrote:

tv.Nodes.CopyTo(MyNodeArray, 0)

tv1.Nodes.AddRange(MyNodeArray)

That will give you an exception with the message "Cannot add or insert the item 'somenodename' in more than one place. You must first remove it from its current location or clone it. As well, that only copies top-level nodes, it does not traverse the tree.

Peter Ritchie Monday, July 17, 2006 6:18 PM

You need to clone all the top-level nodes. This will do what you want:

destinationTreeView.Nodes.Clear();
foreach (TreeNode node in sourceTreeView.Nodes)
{
 TreeNode newNode = node.Clone() as TreeNode;
 destinationTreeView.Nodes.Add(newNode);
}

Peter Ritchie Monday, July 17, 2006 6:27 PM

You can use google to search for other answers

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