using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public  void Main()

    {

        List<List<ABC>> myList = new List<List<ABC>>();

​

        List<ABC> tList = new List<ABC>();    

        tList.Add(new ABC(){QuestionName = "EFirstName", Response = "BBB"});

        tList.Add(new ABC(){QuestionName = "BLastName", Response = "BBBLastName"});

        myList.Add(tList);

​

        List<ABC> bList = new List<ABC>();    

        tList.Add(new ABC(){QuestionName = "zFirstName", Response = "BBB"});

        tList.Add(new ABC(){QuestionName = "QLastName", Response = "BBBLastName"});

        myList.Add(bList);

​

        Console.WriteLine("Normal List");

​

        foreach(var item in myList){

            foreach(var innerItem in item){

                  Console.WriteLine(innerItem.QuestionName + " | "+innerItem.Response);

            }

        }

​

        Console.WriteLine("++++++++++++++++++++++++");

        // Sort

        var sortedList = myList.Select(x=>x.OrderBy(y=> y.QuestionName)).ToList();

​

​

        Console.WriteLine("Sorted List");

        foreach(var item in sortedList){

            foreach(var innerItem in item){

                 Console.WriteLine(innerItem.QuestionName + " | "+innerItem.Response);

            }

        }

​

    }

}

​

public class ABC{

        public string QuestionName{get; set;}

    public string Response{get; set;}

}