I have a json custom converter using the standard asp.net library. My converter looks like this:
public class MyObjectToJson : JavaScriptConverter
  public override IDictionary<string, object> Serialize(object obj, JavaScriptSerializer serializer)
  {
     MyObject TheObject = obj as MyObject;
     Dictionary<string, object> OutputJson = new Dictionary<string, object>();
     OutputJson.Add("SomeProperty", TheObject.Property1);
     //line that I'm not figuring out
     //I have a type MyNestedObject nested in the object model of MyObject
     //I added that nested converter in the SupportedTypes method    
     OutputJson.Add("TheNestedObject",....?);
     return OutputJson;
   }
   public override IEnumerable<Type> SupportedTypes
   {
      get { return new Type[] { typeof(MyObject), typeof(MyNestedObject) }; }
   }
Basically, I have another json custom converter that's called MyNestedObjectJson but I'm wondering where to plug it in.
