using System;

using System.Linq;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var details = new List<Details>();

        Console.WriteLine(details.All(x => !string.IsNullOrEmpty(x.Text)));

        Console.WriteLine(details.All(x => !string.IsNullOrEmpty(x.Text)));

    }

​

    private class Details

    {

        public string Text { get; set; }

    }

}