/// <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)
{
// TODO: Create an appropriate data model for your problem domain to replace the sample data
CustomerDataGroup group = await CustomerDataSource.GetGroupAsync((String)e.NavigationParameter);
DefaultViewModel["Group"] = group;
DefaultViewModel["Items"] = group.Items;
}
