Better not rely on this behavior...

gistfile1.txt

        [Test]
        public void Building_dictionary_from_ordered_list_preserves_key_order() {
            var d = new Dictionary<string, string>() {
                {"x", "x"},
                {"a","a"},
                {"g","g"},
                {"b","b"}
            };
            Console.WriteLine("original order:     " + string.Join("&", d.Select(x => x.Key + "=" + x.Value).ToArray()));
            d = d.OrderBy(x => x.Key, StringComparer.Ordinal).ToDictionary(k => k.Key, v => v.Value);
            Console.WriteLine("after sort rebuild: "+string.Join("&", d.Select(x => x.Key + "=" + x.Value).ToArray()));
        }
>>>>>>>>>
original order:     x=x&a=a&g=g&b=b
after sort rebuild: a=a&b=b&g=g&x=x