Get file name + extension from a resource name

gistfile1.cs

static string GetResourceFileName(string resourceName)
{
    var nameSegments =
        resourceName.Split(new[] { "." }, StringSplitOptions.RemoveEmptyEntries);

    var segmentCount =
        nameSegments.Count();

    return (segmentCount < 2) ? 
        string.Empty : 
        string.Format("{0}.{1}", nameSegments.ElementAt(segmentCount - 2), nameSegments.Last());
}