FSO.IDE.ObjectBrowser.ObjectTree_AfterSelect C# (CSharp) Method

        private void ObjectTree_AfterSelect(object sender, System.Windows.Forms.TreeViewEventArgs e)
        {
            var node = ObjectTree.SelectedNode;

            if (node == null)
            {
                ObjNameLabel.Text = "No Object Selected.";
                ObjDescLabel.Text = "";
                ObjMultitileLabel.Text = "";
                SelectedFile = null;
                SelectedObj = null;
            }

            ObjectRegistryEntry entry = null;
            SourceNodeToEnt.TryGetValue(node, out entry);

            if (entry == null)
            {
                //chose a filename
                ObjNameLabel.Text = node.Text+".iff";
                ObjDescLabel.Text = "Object File";
                ObjMultitileLabel.Text = "Contains "+ObjectRegistry.MastersByFilename[node.Text].Count+" master objects.";
                SelectedFile = node.Text;
                SelectedObj = null;
                ObjThumbnail.ShowObject(0);
            }
            else
            {
                ObjNameLabel.Text = entry.Name;
                SelectedFile = entry.Filename;
                SelectedObj = entry;
                ObjThumbnail.ShowObject(entry.GUID);
                ObjDescLabel.Text = "§----";
                if (entry.Group == 0) {
                    ObjMultitileLabel.Text = "Single-tile object.";
                }
                else if (entry.SubIndex < 0)
                {
                    ObjMultitileLabel.Text = "Multitile master object.";
                }
                else
                {
                    ObjMultitileLabel.Text = "Multitile part. ("+(entry.SubIndex>>8)+", "+(entry.SubIndex&0xFF)+")";
                }
            }
            if (SelectedChanged != null) SelectedChanged();
        }