1. 先添加System.Web.Extensions.dll引用
var js = new System.Web.Script.Serialization.JavaScriptSerializer();
string test_json = "{\"name\":\"tom\",\"nickname\":\"tony\",\"sex\":\"male\",\"age\":20,\"email\":\"123@123.com\"}";
var jarr = js.Deserialize<Dictionary<string, object>>(test_json);
foreach (var j in jarr)
{
Console.WriteLine(string.Format("{0}:{1}", j.Key, j.Value));
} 2.使用这个类 Newtosonjson.dll
更多方法参考：http://www.cnblogs.com/usharei/archive/2012/04/24/2467578.html