C# MVC JSON Helpers

JSONHelper.cs

using System.Web.Mvc;
using System.Web.Script.Serialization;

namespace Web.Helpers
{
    public static class ExtensionMethods
    {
        public static MvcHtmlString ToJson(this HtmlHelper html, object obj)
        {
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            return MvcHtmlString.Create(serializer.Serialize(obj));
        }

        public static MvcHtmlString ToJson(this HtmlHelper html, object obj, int recursionDepth)
        {
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            serializer.RecursionLimit = recursionDepth;
            return MvcHtmlString.Create(serializer.Serialize(obj));
        }
    }
}