Sort A List : Print the sorted list of ages of the students, C#

Language: Layout:

//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;

namespace Rextester
{
    public class Program
    {
        public class Student
        {
            public string Name { get; set; }
            public int Age {get; set;}
            
        }
                    
        public static List<Student> StudentList;    
        
        
        public static void Main(string[] args)
        {
          
            //Prepare the list of students
            LoadStudents();
                   
            //Create an array of 100 elements
            int[] studentCount = new int[100];
            //Each element represents an age category
            //Ex. First element will contain the count of students who are 1 year old
            //Ex. 100th element will contain the count of students who are 100 years old
           
            //Loop through the list of students to count the students per age value and update the array
            foreach(Student l in StudentList){
                //Get the index in the array that represents the age of the student
                int index = l.Age - 1;
                //Update the value of that element by incrementing the value by 1
                studentCount[index] = studentCount[index] + 1;
                                     
            }
            
            
            //Print a sorted list of all students ages
            int currentAge = 0;
            foreach(int i in studentCount)
            {
                //Determine the age represented by the current element
                currentAge++;
                
                //If the value of the element is not 0, then print Age as many times as stated in the value
                //If in the 5th element the value is 3, then that means there are 3 students who are aged 5
                //So we print "5" three times
                if(i!=0)
                    for(int r=0; r < i; r++)
                       Console.WriteLine(currentAge);
            }
            
            
                
            
        } 
        
        public static void LoadStudents()
        {
                          
            Student s = new Student(){ Name = "Ivy", Age = 33};
            Student s1 = new Student(){ Name = "Ryan", Age = 34};
            Student s2 = new Student(){ Name = "Ron", Age = 23};
            Student s3 = new Student(){ Name = "Melvin", Age = 2};
            Student s4 = new Student(){ Name = "Sara", Age = 33};
            Student s5 = new Student(){ Name = "Mars", Age = 43};
            Student s6 = new Student(){ Name = "Pluto", Age = 50};
            Student s7 = new Student(){ Name = "Neptune", Age = 6};
            Student s8 = new Student(){ Name = "Nero", Age = 5};
            Student s9 = new Student(){ Name = "Augustus", Age = 34};
           
            StudentList = new List<Student>();
            StudentList.Add(s);
            StudentList.Add(s1);
            StudentList.Add(s2);
            StudentList.Add(s3);
            StudentList.Add(s4);
            StudentList.Add(s5);
            StudentList.Add(s6);
            StudentList.Add(s7);
            StudentList.Add(s8);
            StudentList.Add(s9);
        }
        
        
    }
}

Show compiler warnings [ + ] Show input
Compilation time: 0,16 sec, absolute running time: 0,09 sec, cpu time: 0,08 sec, average memory usage: 12 Mb, average nr of threads: 3