C# Converting Treeview To XML

public void TreeViewToXml(TreeView treeView, String path)

{

xmlDocument = new XmlDocument();

TreeNodeCollection nodes= null ;
foreach (TreeNode treeNode in treeView.Nodes)
{

xmlDocument.AppendChild(xmlDocument.CreateElement(treeNode.Text));

nodes = treeNode.Nodes;
}

XmlExport(xmlDocument.DocumentElement, nodes);

xmlDocument.Save(path);
}

private XmlNode XmlExport(XmlNode nodeElement, TreeNodeCollection treeNodeCollection)

{

XmlNode xmlNode = null;

foreach (TreeNode treeNode in treeNodeCollection)

{

xmlNode = xmlDocument.CreateElement(treeNode.Text);

string[] node = xmlNode.Name.Split(':');

if (node[0] == "ATTRIBUTE")

{

if (node[0] != null && node[1] != null)

{

XmlAttribute newAttribute = xmlDocument.CreateAttribute(node[1]);

nodeElement.Attributes.Append(newAttribute);
}
}

else

{
if (nodeElement != null)nodeElement.AppendChild(xmlNode);
}

if (treeNode.Nodes.Count > 0)

{
XmlExport(xmlNode, treeNode.Nodes);
}
}

return xmlNo