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;
}