Hex2Bin

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

namespace Hex2Bin
{
    class Program
    {
        static void Main(string[] args)
        {
            string n = "32A";
            string result = "";
            string temp="";

            for (int i = 0; i < n.Length; i++)
            {
                switch(n[i])
                {
                    case '1':
                        temp = "0001";
                        break;
                    case '2':
                        temp = "0010";
                        break;
                    case '3':
                        temp = "0011";
                        break;
                    case '4':
                        temp = "0100";
                        break;
                    case '5':
                        temp = "0101";
                        break;
                    case '6':
                        temp = "0110";
                        break;
                    case '7':
                        temp = "0111";
                        break;
                    case '8':
                        temp = "1000";
                        break;
                    case '9':
                        temp = "1001";
                        break;
                    case 'A':
                        temp = "1010";
                        break;
                    case 'B':
                        temp = "1011";
                        break;
                    case 'C':
                        temp = "1100";
                        break;
                    case 'D':
                        temp = "1101";
                        break;
                    case 'E':
                        temp = "1110";
                        break;
                    case 'F':
                        temp = "1111";
                        break;
                    default:
                        break;
                }
                result += temp;
            }
            Console.WriteLine(result);
        }
    }
}