本文介绍了传递接口在WCF服务?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我尝试用WCF服务,以及所遇到的一个问题,经过接口。
I'm experimenting with WCF Services, and have come across a problem with passing Interfaces.
本作品:
[ServiceContract]
public interface IHomeService
{
[OperationContract]
string GetString();
}
但这并不:
[ServiceContract]
public interface IHomeService
{
[OperationContract]
IDevice GetInterface();
}
当我尝试编译失败的GetInterface方法的客户端。我得到一个异常说,它不能转换为对象的iDevice。
When I try to compile the client it fails on the GetInterface method. I get an Exception saying that it can't convert Object to IDevice.
在客户方的IHomeService类正确实现的GetString一个字符串作为它的返回类型,但GetInterface具有对象的返回类型。为什么不是它的iDevice?
On the clientside the IHomeService class correctly implements GetString with a string as it's returntype, but the GetInterface has a returntype of object. Why isn't it IDevice?
推荐答案
您需要告诉WCF序列化哪一个类使用序列化接口
You need to tell the WCF serializer which class to use to serialize the interface
[ServiceKnownType(typeof(ConcreteDeviceType)]
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