使用as datacontract的继承类

Question

实际上我使用继承类作为DataContract时遇到问题。以下是我的代码

[DataContract]
public class PartialTestClass
{
}

[DataContract]
public class TestClass : PartialTestClass
{
}

[ServiceContract(Name = "IMessageContract", 
CallbackContract = typeof(IMessageCallback))]
public interface IMessageContract
{
    [OperationContract]
    PartialTestClass Test(PartialTestClass partialTestClass);
}

客户端：

PartialTestClass p = new TestClass();
p.Name = "Afshin.Ahmari";
TestClass p2 = (TestClass)Proxy.Test(p);

任何人都可以帮助我

Answer 1

子类需要是基类的known types：

    [DataContract]
    [KnownType(typeof(TestClass))]
    public class PartialTestClass { }