[Mono-bugs] [Bug 639381] Using DataContractJsonSerializer and knownTypes doesn't produce correct JSON

bugzilla_noreply at novell.com bugzilla_noreply at novell.com
Tue Mar 22 21:37:27 EDT 2011



Adam Fletcher <fletcham at gmail.com> changed:

           What    |Removed                     |Added
                 CC|                            |fletcham at gmail.com

--- Comment #1 from Adam Fletcher <fletcham at gmail.com> 2011-03-23 01:37:26 UTC ---
I am experiencing the same situation with my code.  Running identical code on a
windows machine (Windows 7) produces a different result than when it is run on
a Mac (Mac OS X 10.6.5)

On Windows 7 using mono/.net 3.5 it gives me this result: 


On Mac OS X 10.6.5 using mono/.net 3.5 it gives me this result: 


Listed below is a console application that can be run to show the results
listed above.  In order to run this you need to include two references:
System.Runtime.Serialization and System.ServiceModel.Web.

using System; 
using System.Collections.Generic; 
using System.Runtime.Serialization.Json; 
using System.IO; 
using System.Text; 

namespace JsonTest 
        class MainClass 
                public static void Main(string[] args) 
                        Hand hand = new Hand(); 
                        hand.Add(new Card { Suit = 0 }); 
                        hand.Add(new Card { Suit = 1 }); 
                        hand.Add(new Card { Suit = 2 }); 

                        string json; 

                        DataContractJsonSerializer ser = new
                        using (MemoryStream ms = new MemoryStream()) 
                                ser.WriteObject(ms, hand); 
                                json =


        public class Card 
                public int Suit { get; set; } 

        public class Hand : List<Card>


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