Treeview legend help please

MapWinGIS
1

I’m building a treeview legend and I wanted to extract the layer category for the treeview node that received the information I need help please because there was a conflict on node 1;

<code source button 1 for treeview:
public void button1_Click(object sender, EventArgs e)
{
MapWinGIS.Shapefile shpfile;
var opendialog1 = new OpenFileDialog();
int handle;
string ext = “”;

        // initialize dialog
        opendialog1.Filter = "Supported Formats|*.shp|Shapefile (*.shp)|*.shp";
        opendialog1.CheckFileExists = true;

        if (opendialog1.ShowDialog(this) == DialogResult.OK)
            {

            // get the extension of the file
            ext = Path.GetExtension(opendialog1.FileName);

            if (ext == ".shp")
                {

                shpfile = new MapWinGIS.ShapefileClass();

                // open the shapefile
                bool blmCheck = shpfile.Open(opendialog1.FileName);

                // add the shapefile to the map
                handle = axMap1.AddLayer(shpfile, true);

                axMap1.Redraw();
                TreeView treeView = new TreeView();
                treeView.Dock = DockStyle.Fill;
                if (blmCheck)
                    switch (ClickNum==1)
                        {
                        default:   
                      TreeNode node = new TreeNode();
                           
                            if (node.Nodes.Count > 0) 
                                rootNode.Nodes.Add(node);
                       //inicio do nó mestre 
                       TreeNode node1 = new TreeNode("Novo Projeto");
                       TreeNode node2 = new TreeNode(Path.GetFileNameWithoutExtension(shpfile.Filename), new TreeNode[] {node1});
                       TreeNode node3 = new TreeNode("Editar Linha");
                       TreeNode node4 = new TreeNode("",new TreeNode[] { node2 } );
                       TreeNode node5 = new TreeNode("Editar Linha");
                       TreeNode node6 = new TreeNode("Editar Poligono",new TreeNode[] {node5});
                            node1.Name = "Child1";
                            node1.Text = axMap1 = (shpfile.Filename.Categories.Generate(handle, tkClassificationType.ctUniqueValues, 0));
                            node2.Name = "node1";
                            node2.Text = (Path.GetFileNameWithoutExtension(shpfile.Filename));
                            node3.Name = "node2";
                            node3.Text = "Editar Linha";
                            node4.Name = "editar";
                            node4.Text = (Path.GetFileNameWithoutExtension(shpfile.Filename));
                            node5.Name = "editar";
                            node5.Text = "Child1";
                            node6.Name = "editar";
                            node6.Text = "Parente2";
                            rootNode.Nodes.AddRange(new TreeNode[] {node4});
                           
                            this.Controls.Add(rootNode);
                            // TreeNode a = rootNode.Nodes.Add(Text, "Novo Projeto");
                            //insere a layer    
                             // TreeNode rootnode = rootNode.Nodes[0].Nodes.Add(Path.GetFileNameWithoutExtension(shpfile.Filename));//meio
                            //insere a edição da layer
                            //  TreeNode b = rootNode.Nodes[0].Nodes[0].Nodes.Add("Editar");//fim

                            //    node.Nodes.IndexOf(a);// obtem o nó node e retorna ao inicio de [a]
                            //    node.Nodes.IndexOfKey(Path.GetFileNameWithoutExtension(shpfile.Filename));
                            //   node.Nodes.IndexOf(a);                                                                              
                            break;
                        
        
                        }
                treeView.Refresh();//restaura o Treeview
                }
            }
        }  />