Write a program in C-Sharp to find the sum of all the digits of a given number.

The problem here is to sum the digits of a give number for example,
if the number x is input as 123 the result should be calculated as 1 + 2 + 3 = 6. To Implement this logic in C, C++, C-Sharp we should use the Modulo operator. For example..,

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

namespace SumOfDig
{
class Program
{
  static void Main(string[] args)
  {
    long modulo,sum=0;
    Console.Write("Enter the Number:");
    long number = long.Parse(Console.ReadLine());
    while (number > 0)
    {
        modulo = (number % 10);
        sum = sum + modulo;
        number = number / 10;
    }
    Console.WriteLine("The Sum of Digits of number is {0}",sum);
    Console.ReadLine();
  }
}
}