Question

我是WCF中的新手。我正在寻找多个回调合约的出路可能或不像下面

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

我正在搜索谷歌并找到出路就像

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
{...}

我只需要知道多个回调合约还有其他出路吗？感谢

Answer 1

单个服务合同不能有多个回调合约（它是1：1的关系，回调合约可以为null）。正如你所发现的，那个替代方案（使用多个“前向”合同，每个都有自己的回调合同）应该可以工作，虽然我没有尝试过（你可以编写一个简单的程序来测试）。

WCF和多个回调合同成为可能

1 个答案: