Sum integers from Enumerable.Range in CSharp

  //from w  w  w  .  j ava2  s  .com
  
  
    
using System;
using System.Linq;
using System.Collections;
using System.Collections.Generic;

public class MainClass {
    public static void Main() {
        IEnumerable<int> ints = Enumerable.Range(1, 10);
        foreach (int i in ints)
            Console.WriteLine(i);
        int sum = ints.Sum();
        Console.WriteLine(sum);
    }
}