How do I move XML nodes?

[lnong]

I am working on an ASP.NET application using C#. In my XMLDocument, I have a node (that contains other nodes within) that I want to move to another location in the tree. How do move that node AND everything it contains? Is there a MoveNode() method? All I see is a ReplaceChild() method. Will that do the job? The only way I could think of using the ReplaceChild() method is the create a new XMLNode at the new desired location, and then replacing that node with the old one. Then use RemoveChild() to delete the old node. Any better ways? Thanks.

[Richard Deeming]

Try something like:

XmlNode MoveNode(XmlNode nodeToMove, XmlNode newParent)
{
// Check we have some values:
if (null == nodeToMove) throw new ArgumentNullException("nodeToMove");
if (null == newParent) throw new ArgumentNullException("newParent");

// Are we moving within the same document?
if (nodeToMove.OwnerDocument == newParent.OwnerDocument)
{
    // Check that the new parent is not a
    // child of the node we are moving:
    XmlNode temp = newParent;
    while(null != temp)
    {
        if (temp == nodeToMove) 
            throw new InvalidOperationException();
        
        temp = temp.ParentNode;
    }
    
    // Remove the node from its old parent:
    if (null != nodeToMove.ParentNode)
        nodeToMove.ParentNode.RemoveChild(nodeToMove);
    
    // Add the node to the new parent:
    return newParent.AppendChild(nodeToMove);
}
else
{
    // Import the node to the new document
    XmlNode newNode = newParent.OwnerDocument.ImportNode(nodeToMove, true);
    
    // Remove the node from its old parent:
    if (null != nodeToMove.ParentNode)
        nodeToMove.ParentNode.RemoveChild(nodeToMove);
    
    // Add the imported node to the new parent:
    return newParent.AppendChild(newNode);
}

}

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