IfcDoc.FormEdit.mergeToolStripMenuItem_Click C# (CSharp) Method

        private void mergeToolStripMenuItem_Click(object sender, EventArgs e)
        {
            DialogResult res = this.openFileDialogMerge.ShowDialog();
            if (res != DialogResult.OK)
                return;

            // load file into different context, compare
            this.m_loading = true;

            Dictionary<long, SEntity> instances = new Dictionary<long, SEntity>();
            using (FormatSPF format = new FormatSPF(this.openFileDialogMerge.FileName, SchemaDOC.Types, instances))
            {
                format.Load();
            }

            this.m_loading = false;

            // now import changes
            DocProject docProjectBase = null;
            foreach (SEntity o in instances.Values)
            {
                if (o is DocProject)
                {
                    docProjectBase = (DocProject)o;
                }
            }

            // create guid map for rapid lookup
            Dictionary<Guid, DocObject> mapGuid = new Dictionary<Guid, DocObject>();
            foreach (SEntity o in this.m_instances.Values)
            {
                if (o is DocObject)
                {
                    DocObject docObj = (DocObject)o;
                    try
                    {
                        mapGuid.Add(docObj.Uuid, docObj);
                    }
                    catch
                    {
                        System.Diagnostics.Debug.WriteLine("Duplicate Guid: " + docObj.Uuid.ToString() + " - " + docObj.GetType().ToString() + " - " + docObj.Name);
                    }
                }
            }

            using (FormMerge formMerge = new FormMerge(mapGuid, docProjectBase))
            {
                res = formMerge.ShowDialog(this);
                if(res == System.Windows.Forms.DialogResult.OK)
                {
                    this.LoadTree();
                }
            }
        }