using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var letters = new[]{"a","b","c"};

        Console.WriteLine("Bad: Using Linq.Count():");

        for(int i = 0; i < letters.Count(x => {Console.WriteLine(x); return true;}); i++)

        {

            Console.WriteLine("for: " + i);

        }

        Console.WriteLine("\r\nGood: Using internal Length indexer:");

        for(int i = 0; i < letters.Length; i++)

        {

            Console.WriteLine("for: " + i);

        }

​

    }

}