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WPF MVVM在视图之间进行通信

[英]WPF MVVM communicate between views

原文 2017-07-10 12:43:52 7 1 c#/ wpf/ mvvm

Lets assume I have a button in View A which should trigger functionality of View B. How is this preferably done? 假设我在视图A中有一个按钮，该按钮应该触发视图B的功能。最好如何做到这一点？ I could use the Mediator but I prefer to avoid it and mainly use it for communication between viewmodels where there is absolutely no other way. 我可以使用调解器，但我倾向于避免使用调解器，而主要将其用于视图模型之间的通信，而绝对没有其他方法。

Here is a thought of mine: 这是我的想法：

So basically we have an interceptor class that handles communication between multiple views. 因此，基本上，我们有一个拦截器类来处理多个视图之间的通信。 The view doesnt know about the other views. 该视图不了解其他视图。 The interceptor acts as a messenger between them. 拦截器充当它们之间的使者。

Is this ok in terms of thinking in MVVM? 在MVVM中思考是否可以？

1 个解决方案

Most MVVM frameworks contains a mediator of some kind for this purpose. 为此，大多数MVVM框架都包含某种介体。

In MvvmLight it is called Messenger and in Prism it is called EventAggregator . 在MvvmLight它称为Messenger ；在Prism它称为EventAggregator 。 For example. 例如。

And the mediator can be used to communicate between any two components, be it a view or a view model, in a loosely coupled way. 中介可以以松散耦合的方式用于在任何两个组件（视图或视图模型）之间进行通信。

So you are basically describing the mediator pattern here. 因此，您基本上是在这里描述中介模式。 Don't reinvent the wheel :) 不要重新发明轮子:)