wpf - 在WPF MVVM中使用行为？

Question

我是WPF MVVM的新手。有人清除WPF中MVVM应用程序中“行为”的用法吗？为什么即使在WPF MVVM中有Method Action ，我们也应该追求“行为”？

Answer 1

行为是您附加到元素上的东西，它指定应用程序应在何时响应。

Action 附加到行为，并定义触发行为时应用程序应执行的操作。

From this article:

At a glance, a behavior looks similar to an action: a self-contained unit of functionality. The main difference is that actions expect to be invoked, and when invoked, they will perform some operation. A behavior does not have the concept of invocation; instead, it acts more as an add-on to an object: optional functionality that can be attached to an object if desired. It may do certain things in response to stimulus from the environment, but there is no guarantee that the user can control what this stimulus is: it is up to the behavior author to determine what can and cannot be customized.

And from this article:

Behaviors let you encapsulate multiple related or dependent activities plus state in a single reusable unit.