我想是这样的：

  [的ServiceContract（
    CallbackContract = typeof运算（CallbackContract_1）
    CallbackContract = typeof运算（CallbackContract_2）
    CallbackContract = typeof运算（CallbackContract_3））
]
公共接口SomeWcfContract {
 

我知道它不会像这样工作。是否有仍然有办法让一个单项合同中使用多个回调接口？

一个服务合同，只能指定   回调合同，如果该合同   是所有回调的子接口   合同的定义合同   自有基地的合同。

 接口ICallbackContract1
{...}

接口ICallbackContract2：ICallbackContract1
{...}

[的ServiceContract（CallbackContract = typeof运算（ICallbackContract1））]
接口IMyBaseContract
{...}

[的ServiceContract（CallbackContract = typeof运算（ICallbackContract2））]
接口IMySubContract：IMyBaseContract
{...}
 

或

 接口ICallbackContract1
{...}
接口ICallbackContract2
{...}
接口ICallbackContract3：ICallbackContract2，ICallbackContract1
{...}

[的ServiceContract（CallbackContract = typeof运算（ICallbackContract1））]
接口IMyBaseContract1
{...}
[的ServiceContract（CallbackContract = typeof运算（ICallbackContract2））]
接口IMyBaseContract2
{...}
[的ServiceContract（CallbackContract = typeof运算（ICallbackContract3））]
接口IMySubContract：IMyBaseContract1，IMyBaseContract2
{...}
 

更多细节见

I'm trying something like this:

[ServiceContract (
    CallbackContract = typeof (CallbackContract_1),
    CallbackContract = typeof (CallbackContract_2),
    CallbackContract = typeof (CallbackContract_3))
]
public interface SomeWcfContract {

I know it does not work like this. Is there still a way to get a single contract use multiple callback interfaces?

A service contract can only designate a callback contract if that contract is a subinterface of all callback contracts defined by the contract's own base contracts.

interface ICallbackContract1
{...}

interface ICallbackContract2 : ICallbackContract1
{...}

[ServiceContract(CallbackContract = typeof(ICallbackContract1))]
interface IMyBaseContract
{...}

[ServiceContract(CallbackContract = typeof(ICallbackContract2))]
interface IMySubContract : IMyBaseContract
{...}

or

interface ICallbackContract1
{...}
interface ICallbackContract2
{...}
interface ICallbackContract3 : ICallbackContract2,ICallbackContract1
{...}

[ServiceContract(CallbackContract = typeof(ICallbackContract1))]
interface IMyBaseContract1
{...}
[ServiceContract(CallbackContract = typeof(ICallbackContract2))]
interface IMyBaseContract2
{...}
[ServiceContract(CallbackContract = typeof(ICallbackContract3))]
interface IMySubContract : IMyBaseContract1,IMyBaseContract2
{...}

see for more details