C Sharp for Beginners/Arrays

using System;

Public Class TwoD {   public static void Main(string [] args) {       int[,]a = int[2,2]; int i,j; Console.WriteLine("Enter elements in the array:"); for(i=0;i<2;i++) {           for(j=0;j<2;j++) {               a[i,j]=Convert.ToInt32(Console.ReadLine); }       }    } }