Full Code Array, SwitchCase

using System;
 
namespace ARRAYMULTIDIMENSI
{
    class ARRAYMHS
    {
        public static void Main(string[] args)
        {
        //initializing 2D array
       char ch;
       string[ , ] x = new string[4,2];
        // Input Kolom nama 1
       Console.Write("Input nama ke 1 : ");
       x[0,0] = Console.ReadLine();
       //Input Kolom NIM 1
       Console.Write("Input NIM ke 1 : ");
       x[0,1] = Console.ReadLine();
        // Input Kolom nama 2
       Console.Write("Input nama ke 2 : ");
       x[1,0] = Console.ReadLine();
       //Input Kolom NIM 1
       Console.Write("Input NIM ke 2 : ");
       x[1,1] = Console.ReadLine();
        // Input Kolom nama 3
       Console.Write("Input nama ke 3 : ");
       x[2,0] = Console.ReadLine();
       //Input Kolom NIM 3
       Console.Write("Input NIM ke 3 : ");
       x[2,1] = Console.ReadLine();
        // Input Kolom nama 4
       Console.Write("Input nama ke 4 : ");
       x[3,0] = Console.ReadLine();
       //Input Kolom NIM 4
       Console.Write("Input NIM ke 4 : ");
       x[3,1] = Console.ReadLine();  	 
        // access first element from second row
        Console.WriteLine("=====================================");
        Console.WriteLine("PILIH TAMPILAN");
        //Console.WriteLine("a. Input data");
        Console.WriteLine("a. Tampilkan Seluruh Kolom Nama");
        Console.WriteLine("b. Tampilkan Seluruh Kolom NIM");
        Console.WriteLine("c. Tampilkan Seluruh Kolom Tabel");
        Console.Write("Masukkan pilihan     : ");
        ch = Convert.ToChar(Console.ReadLine());
        
        switch(Char.ToLower(ch))
        {
            case 'a':
            Console.WriteLine("NAMA");
            Console.WriteLine("=================================");
            Console.WriteLine("Nama ke 1 " + x[0,0]);
            Console.WriteLine("Nama ke 2 " + x[1,0]);
            Console.WriteLine("Nama ke 3 " + x[2,0]);
            Console.WriteLine("Nama Ke 4 " + x[3,0]);
            break;
            case 'b':
            Console.WriteLine("NIM");
            Console.WriteLine("=================================");
            Console.WriteLine("Nim ke 1 " + x[0,1]);
            Console.WriteLine("Nim ke 2 " + x[1,1]);
            Console.WriteLine("Nim ke 3 " + x[2,1]);
            Console.WriteLine("NIm ke 4 " + x[3,1]);
            break;
            case 'c':
            Console.WriteLine("Tabel");
            Console.WriteLine("=================================");
            Console.WriteLine("Nama: " + x[0,0] + " | " + "Nim: " + x[0,1]);
            Console.WriteLine("Nama: " + x[1,0] + " | " + "Nim: " + x[1,1]);
            Console.WriteLine("Nama: " + x[2,0] + " | " + "Nim: " + x[2,1]);
            Console.WriteLine("Nama: " + x[3,0] + " | " + "Nim: " + x[3,1]);
            break;
            default:
            Console.WriteLine("pilihan tidak tersedia");
            break;
        }
    }
  }
}