for each - else extension method

I've implemented nice foreach-else extention method to handle what happens if the loop does not hit. 

public static IEnumerable<TSource> Else<TSource>(this IEnumerable<TSource> source, Action @else)
{
    bool loopHit = false;
    foreach (var item in source)
    {
        loopHit = true;
        yield return item;
    }
    if ((loopHit == false) && (@else != null))
    {
        @else();
    }
}

Usage:

foreach (KeyValuePair item in GetPairs().Else(()=>Console.WriteLine("No entry!!")))
{
    Console.WriteLine("{0}: {1}", item.Key, item.Value);
}