Hi Stoyo,

I have seen the developer's guide and found some relevant information on accessing node hierarchy. I have some specific queries regarding that:
Using the code you sent yesterday, I am trying to get the node that has no parents (i.e. the Root node) and then start a tree traversal from that node (updating information at each level). Different branches may have different levels.
Presently I am testing to see if I can write the nodeID for the parent node to a text file, but haven't succeeded. Please have a look at the code below:

StreamWriter sw = new StreamWriter("C:\\work\\bca_data.txt", true, Encoding.ASCII);


            foreach (DiagramNode node in diagram.Nodes)
            {
                TableNode table = node as TableNode;
                if (table == null)
                    continue;
                if (table.Query("inlinks/origin")==null)
                {
                    string parentstring = table.Caption.ToString() + "parent";
                    sw.WriteLine(parentstring);
                } 

Thanks,
...