Converting Normal Parameter Values to JSON Parameter values and Vice Versa

From normal values to Json Parameters:

using (MemoryStream ms = new MemoryStream())

{

    DataContractJsonSerializer serializer = new DataContractJsonSerializer(objuser1.GetType());

    serializer.WriteObject(ms, objuser1);
    ms.Position = 0;
    using (StreamReader reader = new StreamReader(ms))
    {
       string JsonString= reader.ReadToEnd();
       Label11.Text = JsonString;
    }
  } 

From Json parameters to normal parameters:

string url = Server.MapPath("~/App_Data/JsonResult.txt");

        System.IO.StreamReader myFile = new System.IO.StreamReader(url);
        string myString = myFile.ReadToEnd();
        myFile.Close();
        Stream stream = new MemoryStream(Encoding.Unicode.GetBytes(myString.ToString()));
        User1 objuser = new User1(); 

        DataContractJsonSerializer objSerializer = new DataContractJsonSerializer(typeof(User1));

        objuser = (User1)objSerializer.ReadObject(stream); 

public class User1

{
        public string UserName { get; set; }
        public string FOUnit { get; set; }
        public string CashLimit { get; set; }
        public string TotalCollected { get; set; }
        public string TotalRemitted { get; set; }

 }