Use Where operator in CSharp

   //from   w  w  w  .  j a v  a 2s. c  om

using System;
using System.Collections.Generic;
using System.Linq;
public class MainClass {
    public static void Main() {

        IEnumerable<char> vowels = "aeiou";
        IEnumerator<char> rator = vowels.GetEnumerator();
        IEnumerable<char> query = "Not what you might expect";

        char vowel;
        while (rator.MoveNext()) {
            vowel = rator.Current;
            query = query.Where(c => c != vowel);
        }
    }
}