如何使用 MVVM 取消对对象的编辑? [英] How to cancel an edit to an object using MVVM?

问题描述

如何使用 MVVM 实现取消编辑对象.

例如:我有一个客户列表.我选择一个客户，然后单击编辑"按钮，打开一个对话框窗口(DataContext 绑定到 CustomerViewModel)，然后我开始编辑客户的字段.然后我决定取消编辑，但是客户的字段已经改变了，那么我如何在MVVM中将客户恢复到以前的状态?

解决方案

查看 IEditableObject 接口.您的 Customer 类应该实现它，并且您的命令可以根据需要执行 BeginEdit/CancelEdit/EndEdit.>

How can I implement cancelation of editing an object using MVVM.

For example: I have a list of customers. I choose one customer an click the button "Edit", a dialog window(DataContext is binded to CustomerViewModel) opens and I start editing customer's fields. And then I decide to cancel editing, but the fields of the customer have been already changed, so how can I return a customer to its previous state in MVVM?

解决方案

Check out the IEditableObject interface. Your Customer class should implement that, and your commands can execute BeginEdit / CancelEdit / EndEdit as appropriate.

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