static void Main(string[] args)
{
do
{
Bookstore <Product> books = new Bookstore <Product>();
try
{
using (FileStream fs = new FileStream(@"../../../books.json", FileMode.Open))
{
DataContractJsonSerializer jsonSerializer = new DataContractJsonSerializer(typeof(Bookstore <Product>),
new Type[] { typeof(Book), typeof(Product) });
books = (Bookstore <Product>)jsonSerializer.ReadObject(fs);
}
}
catch (Exception e)
{
Console.WriteLine("проблемы" + e.Message);
}
foreach (var item in books)
{
Console.WriteLine(item);
}
books.Remove();
var linq = from book in books
where ((Book)book).Year == books.Max(x => ((Book)x).Year)
select book;
Console.WriteLine("3 линк: ");
foreach (var item in linq)
{
Console.WriteLine(item);
}
Console.WriteLine($"Размер = {linq.Count()}");
Console.WriteLine();
} while (Console.ReadKey(true).Key != ConsoleKey.Escape);
}