如何从WCF服务返回用户定义的类型？

[DataContract]
public class MyCustomType
{
    [DataMember]
    public string Property1 { get; set; }

    [DataMember]
    public int Property2 { get; set; }
}

[ServiceContract]
public interface IMyService
{
    [OperationContract]
    MyCustomType GetCustomType();
}

public class MyService : IMyService
{
    public MyCustomType GetCustomType()
    {
        return new MyCustomType
        {
            Property1 = "Hello, WCF!",
            Property2 = 42
        };
    }
}

  <bindings>
   <basicHttpBinding>
     <binding name="MyBindingConfig">
       <security mode="None" />
      </binding>
    </basicHttpBinding>
  </bindings>
 <services>
   <service name="MyService">
     <endpoint address="http://localhost:8080/MyService"
                binding="basicHttpBinding"
                bindingConfiguration="MyBindingConfig"
                contract="IMyService" />
    </service>
  </services>
</system.serviceModel>

using (var client = new MyServiceClient())
{
    MyCustomType result = client.GetCustomType();
    Console.WriteLine($"Property1: {result.Property1}, Property2: {result.Property2}");
}