private async void LoadCustomers() { try { CustomerDataGroup firstGroup = _customerDataGroups.FirstOrDefault(); if (firstGroup == null) { firstGroup = new CustomerDataGroup("Customer Default", "Customers", "Customer SubTitle", "image", "Customer Description"); _customerDataGroups.Add(firstGroup); } // TODO: Create an appropriate data model for your problem domain to replace the sample data ObservableCollection <CustomerDataGroup> customerDataGroups = await CustomerDataSource.GetGroupsAsync(); if (!customerDataGroups.Any()) { return; } foreach (CustomerDataItem item in customerDataGroups.First().Items) { firstGroup.Items.Add(item); } } catch (Exception ex) { Debug.WriteLine(ex); } }
/// <summary> /// Populates the page with content passed during navigation. Any saved state is also /// provided when recreating a page from a prior session. /// </summary> /// <param name="sender"> /// The source of the event; typically <see cref="NavigationHelper" /> /// </param> /// <param name="e"> /// Event data that provides both the navigation parameter passed to /// <see cref="Frame.Navigate(Type, Object)" /> when this page was initially requested and /// a dictionary of state preserved by this page during an earlier /// session. The state will be null the first time a page is visited. /// </param> private async void navigationHelper_LoadState(object sender, LoadStateEventArgs e) { _customerDataGroups = await CustomerDataSource.GetGroupsAsync(); DefaultViewModel["Groups"] = _customerDataGroups; //var result = await SaleSaveInfo.GetSaleList(); //pendingInvoiceCount.Text = "Pending Invoices: " + result.Count; }