Wcf、序列化、只读成员
我正在学习 WCF，今天面临的挑战之一是实现此设计：
[DataContract]
public class MyOwnFaultException : FaultException<MyResult>
{
public MyOwnFaultException(MyResult result) : base(result) {}
}
[DataContract]
public class MyResult
{
readonly DefinedResults dres;
public MyResult(DefinedResults res) {
dres = res;
}
[DataMember]
public DefinedResults DRes
{
get { return this.dres; }
//do not want to have the setter for this, but w.o it .net throws exception
}
}
[DataContract]
public enum DefinedResults
{
Success = 0,
Fail = 1,
}
服务
[OperationContract]
[FaultContract(typeof(MyOwnFaultException))]
void TestRemoteException();
因此，当我尝试创建对“错误”服务的引用时，我自然会得到“No Set”对于“DRes 成员”，这是可以理解的例外情况。但是如何对用于结果指示器的值对象实现只读字段模式？
I am learning WCF and one of the challenges I am faced with today is to implement this design:
[DataContract]
public class MyOwnFaultException : FaultException<MyResult>
{
public MyOwnFaultException(MyResult result) : base(result) {}
}
[DataContract]
public class MyResult
{
readonly DefinedResults dres;
public MyResult(DefinedResults res) {
dres = res;
}
[DataMember]
public DefinedResults DRes
{
get { return this.dres; }
//do not want to have the setter for this, but w.o it .net throws exception
}
}
[DataContract]
public enum DefinedResults
{
Success = 0,
Fail = 1,
}
Service
[OperationContract]
[FaultContract(typeof(MyOwnFaultException))]
void TestRemoteException();
So, naturally when I try to create a reference to my 'faulty' service I get the "No Set For DRes member" exception which is understood. But how to I implement the readonly field pattern to the value object used for result indicator?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（2）
这是因为服务共享模式和契约，而不是类。
话虽如此，你可以通过以下方式破解它：
This is because services share schema and contract, not class.
Having said that, you could hack it by doing:
使用WCF时没有值对象。通过操作接收和发送的所有对象都必须是可序列化的 - 必须具有无参数构造函数（正如注释中所指出的，这对于 DataContractSerializer 来说不是必需的），并且所有序列化字段都必须是可写的。如果您想发送不可序列化的对象，您可以实现 IDataContractSurrogate 或只是实现您自己的数据传输对象 (DTO)。
There is no value object when using WCF. All object received and send by operation must be serializable - must have parameterless constructor (as marc pointed in comment this is not necessary for
DataContractSerializer) and all serialized field must be writable. If you want to send object which is not serializable you can implement IDataContractSurrogate or just implement your own Data transfer object (DTO).