Copy files to clipboard in C#

StringCollection paths = new StringCollection();
paths.Add("f:\temp\test.txt");
paths.Add("f:\temp\test2.txt");
Clipboard.SetFileDropList(paths);

TreeNode selectedNode;
TreeNode copiedNode;

selectedNode = yourTreeview.SelectedNode;

if (selectedNode != null)
{
    copiedNode = selectedNode.Clone;
}

// Then you can do whatever you like with copiedNode elsewhere in your app.

Clipboard.SetDataObjecT(yourTreeNodeDataObject);