Unable to deserialize an XML with Datacontractserialization

I am trying to deserialize an XML file with a List<object> into a DataContract class. With the below code I am able to deserialize every property, except the List<object>.

 

Code:

    [DataContract(Namespace = "http://myNamespace")]

    [KnownType(typeof(List<Child>))]

    public class Person

    {

        [DataMember]

        public List<Child> Children { set; get; }

        [DataMember]

        public DateTime birthdate { set; get; }

        [DataMember]

        public string SSN { set; get; }

        [DataMember]

        public string Gender { set; get; }

        [DataMember]

        public string Name { set; get; }

        [DataMember]

        public int PersonID { set; get; }

 

        public Person()

        {

                Children=new List<Child>();

        }

    }

 

    [DataContract]

    public class Child

    {

        [DataMember]

        public string Name { set; get; }

    }

    class Program

    {

        static void Main(string[] args)

        {

            var rm = new ResourceManager("WCFExample.Resource1", Assembly.GetExecutingAssembly());

            string xml = rm.GetString("Person.xml");

            Person r = null;

            var ms = new MemoryStream(Encoding.Default.GetBytes(xml));

            using (var reader = XmlDictionaryReader.CreateTextReader(ms, new XmlDictionaryReaderQuotas()))

            {

                DataContractSerializer ser = new DataContractSerializer(typeof(Person));

                r = (Person)ser.ReadObject(reader, true);

                reader.Close();

            }

            Console.WriteLine(  "Child name:"+r.Children[0].Name);

            Console.WriteLine( "PersonID:"+r.PersonID );

            Console.WriteLine(  "Navn:"+r.Name);

}

    }

 

XML file      (Person.xml):

 

<Person xmlns="http://myNamespace">

       <Children>

              <Child>

              <Name>chinnu</Name>

              </Child>

              <Child>

              <Name>bittu</Name>

              </Child>

       </Children>

      <birthdate>1980-12-31</birthdate>

      <SSN>10067136132</SSN>

      <Gender>M</Gender>

      <Name>Ravi</Name>

      <PersonID>1</PersonID>

    </Person>

 

Output: Though I have 2 child objects as shown in above XML, still the Children collection is always empty. So Children[0].Name is throwing exception. Not sure what I am missing here. Please help!

SOLUTION: 1

Replace:

    [DataContract]

    public class Child

    {

        [DataMember]

        public string Name { set; get; }

    }

With

    [DataContract(Namespace = "http://myNamespace")]

    public class Child

    {

        [DataMember]

        public string Name { set; get; }

    }

 

Using the same namespace on Child element also. However, it works only if namespaces are the same. I would love to know how to handle if both Person and Child are in different namespaces J