Ray's Asp.net Blog: 2013

using System.Reflection;
using System.Web;
using System.Web.Mvc;
using System.Web.Routing;
namespace me.ExtensionMethods
{
    public static class Html
    {
        public static MvcHtmlString AbsoluteActionLink(this HtmlHelper htmlHelper, string text, string actionName, string controllerName, object routeValues, object htmlAttributes)
        {
            var urlHelper = new UrlHelper(htmlHelper.ViewContext.RequestContext);
            string baseUrl = BaseUrl(htmlHelper.ViewContext.RequestContext.HttpContext.Request, urlHelper.Content("~/"));
            var rd = CastBackTo(routeValues);
            string routelist = GetRouteData(rd);

            var htmls = CastBackTo(htmlAttributes);
            string htmlattributeslist = GetHtmlAttributes(htmls);

            var htmlstring = string.Format("{4}", baseUrl, actionName, controllerName, routelist, text, htmlattributeslist);
            return new MvcHtmlString(htmlstring);
        }

        private static string GetHtmlAttributes(RouteValueDictionary htmls)
        {
            string htmlattributeslist = "";
            foreach (var one in htmls.Keys)
            {
                object value = "";
                htmls.TryGetValue(one, out value);
                htmlattributeslist = htmlattributeslist + string.Format("{0}='{1}'", one, value);
            }
            return htmlattributeslist;
        }

        private static string GetRouteData(RouteValueDictionary rd)
        {
            string routelist = "";
            foreach (var one in rd.Values)
            {
                routelist = routelist + (routelist == "" ? "" : "/") + one;
            }
            return routelist;
        }
        
        public static RouteValueDictionary CastBackTo(object ob)
        {
            RouteValueDictionary result = new RouteValueDictionary();
            foreach (PropertyInfo property in ob.GetType().GetProperties())
            {
                result.Add(property.Name,  property.GetValue(ob, null));
            }
            return result;
        }

        public static string BaseUrl(HttpRequestBase Request, string rootpath)
        {
            var baseUrl = string.Format("{0}://{1}{2}", Request.Url.Scheme, Request.Url.Authority, rootpath);
            if (!baseUrl.ToLower().Contains("localhost"))
            {
                string result = "";
                string[] baseUrlSections = baseUrl.ToLower().Split("/".ToCharArray());
                foreach (var one in baseUrlSections)
                {
                    if (one.Contains(":") && !one.Contains("http"))
                    {
                        result = result + "/" + one.Substring(0, one.IndexOf(":"));
                    }
                    else
                    {
                        result = result + (result == "" ? "" : "/") + one;
                    }
                }
                baseUrl = result;
            }
            return baseUrl;
        }
    }
}

Reference:
http://stackoverflow.com/questions/3142495/deserialize-json-into-c-sharp-dynamic-object

var json = new WebClient().DownloadString(
string.Format("http://maps.googleapis.com/maps/api/geocode/json?address={0}&sensor=false"
, "1600+Amphitheatre+Parkway,+Mountain+View,+CA"));
            var serializer = new JavaScriptSerializer();
            serializer.RegisterConverters(new[] { new DynamicJsonConverter() });
            dynamic obj = serializer.Deserialize(json, typeof(object));
            if (obj.status == "OK")
            {
                var lat = obj.results[0].geometry.location.lat;
                var lng = obj.results[0].geometry.location.lng;
            }

public sealed class DynamicJsonConverter : JavaScriptConverter
{
    public override object Deserialize(IDictionary dictionary, Type type, JavaScriptSerializer serializer)
    {
        if (dictionary == null)
            throw new ArgumentNullException("dictionary");

        return type == typeof(object) ? new DynamicJsonObject(dictionary) : null;
    }

    public override IDictionary Serialize(object obj, JavaScriptSerializer serializer)
    {
        throw new NotImplementedException();
    }

    public override IEnumerable SupportedTypes
    {
        get { return new ReadOnlyCollection(new List(new[] { typeof(object) })); }
    }

    #region Nested type: DynamicJsonObject

    private sealed class DynamicJsonObject : DynamicObject
    {
        private readonly IDictionary _dictionary;

        public DynamicJsonObject(IDictionary dictionary)
        {
            if (dictionary == null)
                throw new ArgumentNullException("dictionary");
            _dictionary = dictionary;
        }

        public override string ToString()
        {
            var sb = new StringBuilder("{");
            ToString(sb);
            return sb.ToString();
        }

        private void ToString(StringBuilder sb)
        {
            var firstInDictionary = true;
            foreach (var pair in _dictionary)
            {
                if (!firstInDictionary)
                    sb.Append(",");
                firstInDictionary = false;
                var value = pair.Value;
                var name = pair.Key;
                if (value is string)
                {
                    sb.AppendFormat("{0}:\"{1}\"", name, value);
                }
                else if (value is IDictionary)
                {
                    new DynamicJsonObject((IDictionary)value).ToString(sb);
                }
                else if (value is ArrayList)
                {
                    sb.Append(name + ":[");
                    var firstInArray = true;
                    foreach (var arrayValue in (ArrayList)value)
                    {
                        if (!firstInArray)
                            sb.Append(",");
                        firstInArray = false;
                        if (arrayValue is IDictionary)
                            new DynamicJsonObject((IDictionary)arrayValue).ToString(sb);
                        else if (arrayValue is string)
                            sb.AppendFormat("\"{0}\"", arrayValue);
                        else
                            sb.AppendFormat("{0}", arrayValue);

                    }
                    sb.Append("]");
                }
                else
                {
                    sb.AppendFormat("{0}:{1}", name, value);
                }
            }
            sb.Append("}");
        }

        public override bool TryGetMember(GetMemberBinder binder, out object result)
        {
            if (!_dictionary.TryGetValue(binder.Name, out result))
            {
                // return null to avoid exception.  caller can check for null this way...
                result = null;
                return true;
            }

            result = WrapResultObject(result);
            return true;
        }

        public override bool TryGetIndex(GetIndexBinder binder, object[] indexes, out object result)
        {
            if (indexes.Length == 1 && indexes[0] != null)
            {
                if (!_dictionary.TryGetValue(indexes[0].ToString(), out result))
                {
                    // return null to avoid exception.  caller can check for null this way...
                    result = null;
                    return true;
                }

                result = WrapResultObject(result);
                return true;
            }

            return base.TryGetIndex(binder, indexes, out result);
        }

        private static object WrapResultObject(object result)
        {
            var dictionary = result as IDictionary;
            if (dictionary != null)
                return new DynamicJsonObject(dictionary);

            var arrayList = result as ArrayList;
            if (arrayList != null && arrayList.Count > 0)
            {
                return arrayList[0] is System.Collections.Generic.IDictionary? new List