public static string ToJson(object obj)

        {

            try

            {

                JavaScriptSerializer serializer = new JavaScriptSerializer();

                var output = serializer.Serialize(obj);

                return output;

            }

            catch (Exception ex)

            {

                return "";

            }

        }

 public static T FromJson<T>(string jsonStr)

        {

            try

            {

                JavaScriptSerializer ds = new JavaScriptSerializer();

                return (T)ds.Deserialize(jsonStr, typeof(T));

            }

            catch (Exception ex)

            {

                return default(T);

            }

        }