private async Task ExecuteLoadDocumentsCommand() { if (IsBusy) { return; } IsBusy = true; try { ContentItems.Clear(); var contentItems = await DataStore.GetContentItemsAsync(true); ContentItems.ReplaceRange(contentItems); } catch (Exception ex) { Debug.WriteLine(ex); MessagingCenter.Send(new MessagingCenterAlert { Title = "Error", Message = "Unable to load content items.", Cancel = "OK" }, "message"); } finally { IsBusy = false; } }