public FindCADsWindow(UIDocument uid) { InitializeComponent(); CADListView.ItemsSource = CADList; uidoc = uid; doc = uidoc.Document; // Get all imports in the model FilteredElementCollector collector = new FilteredElementCollector(doc); collector.OfClass(typeof(ImportInstance)) .WhereElementIsNotElementType() .Cast <ImportInstance>(); foreach (ImportInstance IInstance in collector) { // This section gets view specific imports if (IInstance.OwnerViewId != null && IInstance.OwnerViewId.IntegerValue != -1) { View ownerView = doc.GetElement(IInstance.OwnerViewId) as View; ViewFamilyType ViewTy = doc.GetElement(ownerView.GetTypeId()) as ViewFamilyType; string ViewN = ViewTy.Name + " - " + ownerView.Name; CADItem addition = new CADItem { ViewName = ViewN, CADImportInstance = IInstance, OwnerView = ownerView, IsHide = IInstance.IsHidden(ownerView).ToString() }; CADList.Add(addition); } // This section gets model-wide imports. These CADs can be viewed in every view else { CADItem addition = new CADItem { ViewName = null, CADImportInstance = IInstance, OwnerView = null, IsHide = null }; CADList.Add(addition); } } }