Extending Unigraphics NX using C# (III) Accessing entities

In Unigraphics, there are two files which are especially for programmers.

1. The .net reference, in the folder %UGDir\UGDOC\html_files\nxopen_net_ref.chm, which contains all the class references;
2. The .net programming guide, in the folder %UGDir\UGDOC\html_files\nxopen_net_ref\index.htm .

The 2nd is esp. useful at the initial programming stages.

For instance, in the programming guide, it is clearlly noted the methods of retrieving the entities:

• NX session → list of parts

• part → list of solid bodies

• solid body → list of faces

  solid body → list of edges

• face → list of associated edges

  face → solid body

• edge → list of associated faces

  edge → solid body

Using this, it is very easy to access the entities:

            theSession = Session.GetSession();
            FeatureTree.Nodes.Clear();
            PartCollection sessionParts = theSession.Parts;
            foreach (Part p in sessionParts)
            {
                if (p.IsFullyLoaded)
                {
                    TreeNode PartNode =new TreeNode(p.Leaf);
                    FeatureTree.Nodes.Add(PartNode);
                    foreach (Body body in p.Bodies)
                    {
                        TreeNode BodyNode=new TreeNode(body.JournalIdentifier);
                        BodyNode.Tag = body;
                        PartNode.Nodes.Add(BodyNode);
                    }
                }
            }