有没有一种方法可以防止WPF页面被浏览掉? [英] Is there a way to prevent that a WPF page was navigated away?

问题描述

我正在构建带有页面的WPF导航应用程序. 我想问用户离开页面时是否要保存更改.

I'm building a WPF navigation app, with pages. I want to ask the user if he want to save the changes when he leaves a page.

有办法吗?

推荐答案

注册NavigationService.Navigating事件.完成操作后，别忘了删除您的注册，因为NavigationService基本上会永远存在.

Register for the NavigationService.Navigating event. Don't forget to remove your registration when you are done, since NavigationService sticks around basically forever.

当您获得导航"事件并进行更改时，请显示一个MessageBox以便与用户确认或让他们有机会保存其数据.如果他们单击取消"，则将e.Cancel = true设置为取消导航.

When you get the Navigating event and there are changes, show a MessageBox to confirm with the user or give them a chance to save their data. If they hit Cancel, set e.Cancel = true to cancel the navigation.

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