Untitled

How to serialize class type but not the namespace to a Json string using DataContractJsonSerializer
[DataContract]
[KnownType(typeof(Subscriber))]
public class Person { ... }

[DataContract]
public class Subscriber : Person { ... }

var o = new Subscriber("Fleming");
    var serializer = new DataContractJsonSerializer(typeof(Person));
    serializer.WriteObject(Console.OpenStandardOutput(), o);

var o = new Subscriber("Fleming");
    var serializer = new DataContractJsonSerializer(typeof(Subscriber));
    serializer.WriteObject(Console.OpenStandardOutput(), o);

{
  "__type":"Subscriber:#My.Custom.Namespace",
  "Index":604455,
  "Name":"Fleming",
  "Id":580540
}

{
  "__type":"Subscriber:#",
  "Index":708759,
  "Name":"Fleming",
  "Id":675323
}

[DataMember(Name = "__type")]
public string SubclassType
{
    get
    {
        return "Subscriber";
    }
    set { }
}

public string __type