public void Linq8()
{
ProductComparer comparer = new ProductComparer();
var products = dataSource.Products.GroupBy(p => p.UnitPrice, comparer);
foreach (var product in products)
{
if (comparer.DeterminePriceCategory(product.Key) == ProductPriceCategories.LowPrice)
{
Console.WriteLine("Дешевые товары");
}
if (comparer.DeterminePriceCategory(product.Key) == ProductPriceCategories.AveragePrice)
{
Console.WriteLine("Средние товары");
}
if (comparer.DeterminePriceCategory(product.Key) == ProductPriceCategories.HightPrice)
{
Console.WriteLine("Дорогие товары");
}
foreach (var i in product)
{
Console.WriteLine(i.UnitPrice + " " + i.ProductName);
}
}
}
