Project Euler Problem 1 Solution with C#

ProjectEuler.P1.cs

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


namespace ConsolesTests
{
    class Program
    {
        static void Main(string[] args)
        {
            int NUM = 1000;
            int res =0;
            for (int i = 3; i < NUM; i++)
            {
                if (i % 3 == 0 || i % 5 == 0)
                    res += i;
            }
            Console.WriteLine("\n Done... and the Result is : " + res); // 233168
        }

    }
}