是否可以通过 MVVM Light Messenger 仅发送令牌？
我一直在重构一些最初在 MVVM Foundation 中使用 Messenger 的代码，现在在 MVVM Light Toolit 中使用 Messenger。我似乎无法找到等效的一件事是您想要做的就是发送一个令牌（即，令牌既充当消息的唯一标识符，又充当消息的唯一标识符和消息本身）。
原始代码（MVVM Foundation） - 一个字符串即可解决所有
// send code
mvvmFoundationMessenger.NotifyColleagues("QuestionTimedOut");
// register code
mvvmFoundationMessenger.Register(
"QuestionTimedOut",
() => UpdateOnQuestionTimedOut());
新代码（MVVM Light） - 还有比这更优雅的解决方案吗？
// send code
mvvmLightMessenger.Send("QuestionTimedOut", "QuestionTimedOut");
// register code
mvvmLightMessenger.Register<string>(
this,
"QuestionTimedOut",
token => UpdateOnQuestionTimedOut());
我意识到我可以显式地新建一个 NotificationMessage 但这会添加更多代码。
I've been refactoring some code that was originally using the Messenger in MVVM Foundation to now use the Messenger in MVVM Light Toolit. One thing that I can't seem to find an equivalent for is the case where all you want to do is send a Token (i.e, the Token is acting as both a unique identifier for the message and the message itself).
Original Code (MVVM Foundation) - one string does it all
// send code
mvvmFoundationMessenger.NotifyColleagues("QuestionTimedOut");
// register code
mvvmFoundationMessenger.Register(
"QuestionTimedOut",
() => UpdateOnQuestionTimedOut());
New Code (MVVM Light) - is there a more elegant solution than this?
// send code
mvvmLightMessenger.Send("QuestionTimedOut", "QuestionTimedOut");
// register code
mvvmLightMessenger.Register<string>(
this,
"QuestionTimedOut",
token => UpdateOnQuestionTimedOut());
I realize I could explicitly new up a NotificationMessage but that would add even more code.
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好点。我把它放在 MVVM Light VNext 的积压工作中。
Good point. I put that on the backlog for MVVM Light VNext.
您可以从 MvvmLight 的
Messenger派生并添加您自己的便捷方法，也可以添加Messenger扩展类中的扩展方法。You could derive from MvvmLight's
Messengerand add your own convenience methods or you could addMessengerExtension Methods in an extension class.