I am getting the following exception eventhough I have specified the Datacontract and Datamember. Could you please help me to understand what the issue is?

"Type 'MyServiceLibrary.CompanyLogo' cannot be serialized. Consider marking it with the DataContractAttribute attribute, and marking all of its members you want serialized with the DataMemberAttribute attribute."

Note: The exception occurs when I run the service host. I have not even created a client.

```
using System.ServiceModel;
using System.ServiceModel.Dispatcher;
using System.ServiceModel.Channels;
using System.ServiceModel.Description;
using System.Runtime.Serialization;
using MyServiceLibrary;

namespace MySelfHostConsoleApp
{
    class Program
    {
        static void Main(string[] args)
        {
            System.ServiceModel.ServiceHost myHost = new ServiceHost(typeof(NameDecorator));
            myHost.Open(); 
            Console.ReadLine();
        }
    }

}

//The Service is 

using System.ServiceModel;
using System.Runtime.Serialization;

namespace MyServiceLibrary
{
    [ServiceContract(Namespace = "http://Lijo.Samples")]
    public interface IElementaryService
    {
        [OperationContract]
        CompanyLogo GetLogo();
    }

    public class NameDecorator : IElementaryService
    {
        public CompanyLogo GetLogo()
        {
            Shape cirlce = new Shape();
            CompanyLogo logo = new CompanyLogo(cirlce);
            return logo;
        }
    }

    [DataContract]
    public class Shape
    {
        public string SelfExplain()
        {
            return "sample";
        }

    }

    [DataContract]
    public class CompanyLogo
    {
        private Shape m_shapeOfLogo;

        [DataMember]
        public Shape ShapeOfLogo
        {
            get
            {
                return m_shapeOfLogo;
            }
            set
            {
                m_shapeOfLogo = value;
            }
        }

        public CompanyLogo(Shape shape)
        {
            m_shapeOfLogo = shape;
        }
        public CompanyLogo()
        {

        }
    } 

}

```

//And the host config is

```
<?xml version="1.0" encoding="utf-8" ?>
<configuration>

  <system.serviceModel>
    <services>

      <service name="MyServiceLibrary.NameDecorator"
               behaviorConfiguration="WeatherServiceBehavior">

        <host>
          <baseAddresses>
            <add baseAddress="http://localhost:8017/ServiceModelSamples/FreeServiceWorld"/>
          </baseAddresses>
        </host>

        <endpoint address=""
                  binding="basicHttpBinding"
                  contract="MyServiceLibrary.IElementaryService" />
        <endpoint address="mex"
                  binding="mexHttpBinding"
                  contract="IMetadataExchange" />
      </service>
    </services>
    <behaviors>
      <serviceBehaviors>
        <behavior name="WeatherServiceBehavior">
          <serviceMetadata httpGetEnabled="true"/>
          <serviceDebug includeExceptionDetailInFaults="False"/>
        </behavior>
      </serviceBehaviors>
    </behaviors>
  </system.serviceModel>
</configuration>

```

Thanks

Lijo