Question

我有一个工作正常的WCF服务，今天我更改了合同中的一个函数的代码我添加了这两行：

var name = (from x in new ManagementObjectSearcher("SELECT * FROM Win32_OperatingSystem").Get().OfType<ManagementObject>()
                    select x.GetPropertyValue("Caption")).FirstOrDefault();
        string osFriendlyName = name != null ? name.ToString() : "Unknown";

这意味着我在wcf服务器类中向System.Management添加了引用。合同没有改变我返回我之前返回的相同对象... 现在当客户端尝试调用此函数时，我得到了这个异常：

The message with Action 'http://tempuri.org/IEnvironmentService/GetComputerDetails' cannot be
processed at the receiver, due to a ContractFilter mismatch at the EndpointDispatcher. This may be 
because of either a contract mismatch (mismatched Actions between sender and receiver) or a 
binding/security mismatch between the sender and the receiver.  Check that sender and receiver have
the same contract and the same binding (including security requirements, e.g. Message, Transport,
None).

你觉得这个问题怎么样？即使合同没有变更，我是否需要更新客户的服务参考？

Answer 1

我想您需要更新客户端中的服务引用，因为metadata服务可能已更改，并且可能会引发错误。

Answer 2

好的，我的问题解决了我重建到解决方案，现在好了！

WCF - 更改功能代码：我应该更新服务引用吗？

2 个答案: