meSailesh

public class Student{
		public string name {get; set;}
		public string standard { get; set;}
		public string section {get; set;}
		public int rollNumber {get; set;}
	}

meSailesh

List<Student> sortedStudents = students.
            OrderBy(x => sortedStandard.IndexOf(x.standard)).
            ThenBy(x => sortedSection.IndexOf(x.section)).
            ThenBy(x => x.rollNumber).ToList();

meSailesh

{
   name        : Harry
   rollNumber  : 1
   section     : B
   standard    : Second
   },
   {
   name        : Penny
   rollNumber  : 4
   section     : B

meSailesh

using System;
using System.Collections.Generic;
using System.Linq;
using Newtonsoft.Json;

public class SortList
{
    public static void Main(string[] args)
    {
        List<Student> students = new List<Student>(){

meSailesh

List<string> sortedStandard = new List<string>() {"Second", "First", "Third"};
List<string> sortedSection = new List<string>() {"B", "A"};

meSailesh

List<Student> students = new List<Student>(){
            new Student {name ="Bob", standard = "Third", section ="A", rollNumber=10},
            new Student {name ="Smith", standard = "Second", section ="B", rollNumber=5},
            new Student {name ="Tylor", standard = "first", section ="A", rollNumber=1},
            new Student {name ="Jack", standard = "Third", section ="A", rollNumber=8},
            new Student {name ="Penny", standard = "second", section ="B", rollNumber=4},
            new Student {name ="Diana", standard = "First", section ="A", rollNumber=1},
            new Student {name ="Selena", standard = "First", section ="B", rollNumber=3},
            new Student {name ="Elon", standard = "Second", section ="A", rollNumber=1},
            new Student {name ="Harry", standard = "Second", section ="B", rollNumber=1},

meSailesh

  CREATE TABLE TrackingData 
  (TrackingNumber int, City varcha, DeliveryStatus varchar);

  INSERT INTO TrackingData VALUES
  (1,'NewYork','Delivered'),
  (1,'NewYork','Delivered'),
  (2,'NewYork','Delivered'),
  (3,'Seattle','Delivered'),
  (3,'Seattle','Delivered'),
  (3,'Seattle','NotDelivered'),