public class ProductFromSql
    {
        public string idEshop { get; set; }
        public string active { get; set; }

        public string code { get; set; }
        public string amount { get; set; }
        public string description { get; set; }

    }


    public class ProductFromApi
    {
        public string id { get; set; }
        public string active { get; set; }

        public string code { get; set; }
        public string amount { get; set; }
        public string description { get; set; }
        public string createDate { get; set; }
        public string updated_at { get; set; }
        public string  man_code  { get; set; }


}

...public static void NotEquals()
    {

        var listofGenres = new List<string> { "action", "comedy" };

        var productFromSqls = new List<ProductFromSql> {new ProductFromSql {idEshop="1", active="0",code="2dw",amount="22",description="testowy opis"},
                new ProductFromSql {idEshop="2", active="1",code="kk34",amount="11",description="testowy opis 2"},
                new ProductFromSql {idEshop="3", active="0",code="2323",amount="22",description="testowy opis 3"} };



        var productFromApis = new List<ProductFromApi> {new ProductFromApi {id="1", active="1",code="2dw",amount="22",description="testowy opis",createDate="20180312",updated_at="20170419",man_code="AA2"},
                new ProductFromApi {id="2", active="1",code="kk34",amount="33",description="testowy opis 2",createDate="20180322",updated_at="20170412",man_code="AA4"},
                new ProductFromApi {id="3", active="0",code="2323",amount="22",description="testowy opis 3",createDate="20180311",updated_at="20170402",man_code="BA4"}};


    }
}