IfcDoc.FormEdit.buildFromSubschemaToolStripMenuItem_Click C# (CSharp) Method

        private void buildFromSubschemaToolStripMenuItem_Click(object sender, EventArgs e)
        {
            DialogResult res = this.openFileDialogExpress.ShowDialog();
            if (res != System.Windows.Forms.DialogResult.OK)
                return;

            DocModelView docView = (DocModelView)this.treeView.SelectedNode.Tag;

            // for now, we don't actually import EXPRESS, we just do dumb lookup of strings to see if they are included in model view
            using (System.IO.StreamReader reader = new System.IO.StreamReader(this.openFileDialogExpress.FileName))
            {
                string express = reader.ReadToEnd();

                foreach (DocSection docSection in this.m_project.Sections)
                {
                    foreach (DocSchema docSchema in docSection.Schemas)
                    {
                        foreach (DocEntity docEntity in docSchema.Entities)
                        {
                            string search1 = "ENTITY " + docEntity.Name + ";";
                            string search2 = "ENTITY " + docEntity.Name + "\r\n";
                            if (express.Contains(search1) || express.Contains(search2))
                            {
                                // check for existing
                                DocConceptRoot root = null;
                                foreach (DocConceptRoot exist in docView.ConceptRoots)
                                {
                                    if (exist.ApplicableEntity == docEntity)
                                    {
                                        root = exist;
                                        break;
                                    }
                                }

                                if (root == null)
                                {
                                    root = new DocConceptRoot();
                                    root.ApplicableEntity = docEntity;
                                    docView.ConceptRoots.Add(root);
                                }
                            }
                        }
                    }
                }
            }

            this.LoadTree();
        }