C#

foreach (Node ndSource in treeSource.Nodes)
{
    Node newNode = new Node();
    newNode.Text = ndSource.Text;
    -- copy all required properties like the text property above --
    ChildNodes(ndSource, newNode);
    treeDestination.Nodes.Add(newNode);
}

private void ChildNodes(Node ParentNode, Node newParent)
{
    foreach (Node ndChild in ParentNode.Nodes)
    {
        Node newNode = new Node();
        newNode.Text = ndChild.Text;
        -- copy all required properties like the text property above --
        ChildNodes(ndChild);
        newParent.Nodes.Add(newNode);
    }
}

// Copies the nodes
if (treeView1.Nodes.Count > 0)
{
    TreeNodeCollection treeNodes = treeView1.Nodes;
    TreeNode[] nodearray = new TreeNode[treeNodes.Count];
    for (int i = 0; i < nodearray.Length; i++)
    {
        nodearray[i] = (TreeNode)treeNodes[i].Clone();
    }
    treeView2.Nodes.AddRange(nodearray);
}

//Moves the nodes
if (treeView1.Nodes.Count > 0)
{
    TreeNodeCollection treeNodes = treeView1.Nodes;
    TreeNode[] nodearray = new TreeNode[treeNodes.Count];
    treeNodes.CopyTo(nodearray, 0);
    //Clear the original tree as nodes can't exist in both
    treeView1.Nodes.Clear();
    treeView2.Nodes.AddRange(nodearray);
}

Section.Headers[WdHeaderFooterIndex.wdHeaderFooterPrimary].Range.Fields.Add

Richard Blythe wrote:

form class is already "implementing" the Form class