using System;

using System.Linq;

using System.Collections;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

        var foo = new List<int>();

        foo.Add(1);

        List<int> bar = null;

        Console.WriteLine(IEnumerableHelper.IsNullOrEmpty(foo));

        try{

            Console.WriteLine(bar.IsNullOrEmpty());

        }

        catch (System.Exception ex){

            Console.WriteLine("An error occured: " + ex.Message);

        }

    }

}

​

public static class IEnumerableHelper

{

    public static bool IsNullOrEmpty<T>(this IEnumerable<T> collection){

        return collection.Any();

    }

}