public static class NameValueCollectionExtension
    {
        public static bool CollectionEquals(this NameValueCollection nameValueCollection1, NameValueCollection nameValueCollection2)
        {
            return nameValueCollection1.ToKeyValue().SequenceEqual(nameValueCollection2.ToKeyValue());
        }
 
        private static IEnumerable<object> ToKeyValue(this NameValueCollection nameValueCollection)
        {
            return nameValueCollection.AllKeys.OrderBy(x => x).Select(x => new {Key = x, Value = nameValueCollection[x]});
        }
    }