public Store(int quantity)
{
_articles = new Article[quantity];
_articles[0] = new Article("tel", "Apple", 9000);
_articles[1] = new Article("monitor", "Apple", 8000);
_articles[2] = new Article("notebook", "Dell", 5600);
}
static void DisplayInformation(Article article)
{
Console.WriteLine(String.Format("Information about product: ProductName - {0}, StoreName - {1}, Price = {2}", article.ProductName, article.StoreName, article.Price));
}