Caliburn Micro - 是否可以拦截执行命令的调用？
我想向我的视图模型添加错误处理，以便在执行命令并引发异常时，正确处理错误并显示模式对话框。
我已经做到了这一点，但我的方法太罗嗦了。错误被捕获在命令中，然后通过 IObservable 发布。行为订阅错误 - 创建适当的视图模型并传递给 WindowManager。虽然它有效，但我更喜欢更具声明性的东西。
相反，我想装饰或拦截对命令的调用（绑定到按钮）并提供通用错误处理。 try-catch 可能会调用视图模型上的方法或用 Rescue 属性修饰的命令。
我知道这在 Caliburn 中是可能的，但是可以用 Micro 来完成吗？也许还有另一种方法？
I want to add error handling to my view-models so that when a command is executed and an exception thrown, the error is handled gracefully and a modal dialog displayed.
I've got this working but my approach is a too wordy. Errors are trapped within a command and then published via an IObservable. A behavior subscribes to the errors - creating an appropriate view model and passing to the WindowManager. While it works, I'd prefer something more declarative.
Instead I want to decorate or intercept calls to commannds (bound to a button) and provide generic error handling. The try-catch might call out to a method on the view model or command that is decorated with a Rescue attribute.
I understand this is possible within Caliburn but can it be done with Micro? Perhaps there's an alternative approach?
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看看我在 SO 上提出的这个问题，随后回答了通过 CM Codeplex 论坛提供帮助。
我稍微修改了 此 CM 过滤器实现允许错误处理例程作为协程执行。
这与某些示例中提供的
ShowModalIResult相结合应该可以满足您的需求。Have a look at this question I asked on SO and subsequently answered with help via the CM codeplex forum.
I slightly modified the
RescueAttributeof this CM filters implementation to allow the error handling routine to be executed as a coroutine.This in combination with the
ShowModalIResultavailable in some of the samples should get you what you want.