Sorting of names and numbers lists c #

I have the following code. Where the grades of 5 students are requested, both of course A, as of B. And the highest average is shown. My query is as follows:

How do I also ask for the ordering form, either by name or by note?

Code:

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

namespace PuntoUno
{
 class PuntoUno
 {
    private int[] cursoa;
    private int[] cursob;

    public void Cargar()
    {
        cursoa = new int[5];
        cursob = new int[5];
        Console.WriteLine("Carga de notas del curso A: ");
        for (int f = 0; f < 5; f++)
        {
            Console.Write("Ingrese nota de alumno: ");
            string linea;
            linea = Console.ReadLine();
            cursoa[f] = int.Parse(linea);
        }
        Console.WriteLine("Carga de notas del curso B: ");
        for (int f = 0; f < 5; f++)
        {
            Console.Write("Ingrese nota de alumno: ");
            string linea;
            linea = Console.ReadLine();
            cursob[f] = int.Parse(linea);
        }
    }

    public void CalculoPromedios()
    {
        int suma1 = 0;
        int suma2 = 0;
        for (int f = 0; f < 5; f++)
        {
            suma1 = suma1 + cursoa[f];
            suma2 = suma2 + cursob[f];
        }
        int promedioa = suma1 / 5;
        int promediob = suma2 / 5;
        if (promedioa > promediob)
        {
            Console.WriteLine("El curso A tiene un promedio mayor.");
        }
        else
        {
            Console.WriteLine("El curso B tiene un promedio mayor.");
        }
        Console.ReadKey();
    }


    static void Main(string[] args)
    {
        PuntoUno pv = new PuntoUno();
        pv.Cargar();
        pv.CalculoPromedios();
    }
} 
}

Thanks