/// <summary>
/// Gets order statistics. Asynch call.
/// </summary>
/// <param name="callback">Callback function.</param>
/// <param name="year"></param>
public void GetOrderStatistics(Action <List <OrderStatistics> > callback, int year)
{
var context = new ActionDomainContext();
_orders = context.Orders;
_callback = callback;
context.Load(context.GetOrdersByYearQuery(year), GetOrdersByYearCallback, true);
}
/// <summary>
/// Constructor of AddToCart ViewModel.
/// </summary>
public AddToCartViewModel()
{
if (DesignerProperties.IsInDesignTool)
{
return;
}
_addtocartCommand = new RelayCommand(OnAddToCart);
_addtocartCommand.IsEnabled = true;
Context = new ActionDomainContext();
Products = Context.Products;
}
/// <summary>
/// Constructor for the OrderViewModel.
/// </summary>
public OrderViewModel()
{
if (DesignerProperties.IsInDesignTool)
{
return;
}
_filterCommand = new RelayCommand(OnFilter);
_filterCommand.IsEnabled = true;
_clearCommand = new RelayCommand(OnClearFilter);
_clearCommand.IsEnabled = false;
context = new ActionDomainContext();
// Associate EntitySets with Customer, Order, OrderDetail collections.
Customers = context.Customers;
Orders = context.Orders;
OrderDetails = context.OrderDetails;
LoadCustomers();
}
/// <summary>
/// Constructor of Customer ViewModel
/// </summary>
public CustomerViewModel()
{
if (DesignerProperties.IsInDesignTool)
{
return;
}
// init commands.
_addCommand = new RelayCommand(OnAdd);
_editCommand = new RelayCommand(OnEdit);
_deleteCommand = new RelayCommand(OnDelete);
_saveCommand = new RelayCommand(OnSave);
_cancelCommand = new RelayCommand(OnCancel);
UpdateState(false);
RaiseEvent(Loading);
// Load customers from database
context = new ActionDomainContext();
Customers = context.Customers; // important.
context.Load(context.GetCustomersQuery(), GetCustomersQueryCallback, true);
}
