using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public static void Main()

    {

        List<Test> list = new List<Test>();

        Console.WriteLine(list.All(t => t.Value == 1));

    }

    public class Test

    {

        public int Value {get;set;} 

    }   

}

​

​