entity.MetaEditor2.MetaEditorControlPage.refreshTreeSubNodes C# (CSharp) Method

        private void refreshTreeSubNodes(TreeNode parent)
        {
            foreach (TreeNode tn in parent.Nodes)
            {
                reflexiveData rd = (reflexiveData)tn.Tag;
                if (rd.inTagNumber != meta.TagIndex)
                {
                    map.OpenMap(MapTypes.Internal);
                    BR = map.BR;
                    BR.BaseStream.Position = ((reflexiveData)parent.Tag).baseOffset + rd.reflexive.offset;
                    if (((reflexiveData)parent.Tag).inTagNumber == meta.TagIndex)
                        BR.BaseStream.Position += meta.offset;
                }
                else
                {
                    BR = new BinaryReader(meta.MS);
                    BR.BaseStream.Position = ((reflexiveData)parent.Tag).baseOffset + rd.reflexive.offset;
                }
                rd.chunkCount = BR.ReadInt32();
                rd.baseOffset = BR.ReadInt32() - meta.magic + rd.chunkSelected * rd.reflexive.chunkSize;

                if (rd.chunkCount == 0)
                {
                    tn.ForeColor = Color.LightGray;
                }

                rd.inTagNumber = map.Functions.ForMeta.FindMetaByOffset(rd.baseOffset);
                if (rd.inTagNumber == meta.TagIndex)
                    rd.baseOffset -= meta.offset;
                else
                {
                    map.CloseMap();
                    if (rd.inTagNumber != -1)
                    {
                        tn.ForeColor = Color.Red;
                        tn.ToolTipText = "Data Source Located in:\n[" + map.MetaInfo.TagType[rd.inTagNumber].ToLower() +
                                        "] " + map.FileNames.Name[rd.inTagNumber].ToLower();
                    }
                }
                tn.Text = tn.Name + " [" + rd.chunkCount.ToString() + "]";
                refreshTreeListing(tn);
            }
        }