/// <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);
}
