private void ComponentBuilderForm_Load(object sender, EventArgs e)
        {
            worker = new BackgroundWorker();
            worker.WorkerSupportsCancellation = true;
            worker.WorkerReportsProgress = true;
            worker.DoWork += bw_getOptions;
            worker.RunWorkerCompleted += bw_getOptionsComplete;
            worker.ProgressChanged += bw_ProgressChanged;

            manager = new DBManager(this.RevitDocument);

            foundInModel = manager.RetrieveWallInfo();
            foundInModel.AddRange(manager.RetrieveRoofingInfo());
            foundInModel.AddRange(manager.RetrieveFloorInfo());

            if (foundInModel.Count > 0)
                calculateAreas_Volumes(foundInModel);

            foreach (Assembly assem in Assemblies.Values)
            {
                if (!cboFoundInModel.Items.Contains(assem))
                    cboFoundInModel.Items.Add(assem);
            }
        }