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适合新人学习的WPF MVVM案例

Home Page: http://www.dmskin.com

C# 75.06% Vim Snippet 24.94%

dmskin mvvm viewmodel wpf

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请教依赖属性传递问题

谢谢你的例子,很少看到这么整洁的例子

以下是我的一些问题:

我在代码上打了断点, 以跟踪界面改动如何通知到viewmodel里, 我发现更改了 用户名 之后, 代码里除了 User.UserName 触发修改, 并不会通知到上层的 LoginViewModel 里的 User 中, 意思是WPF的依赖属性不支持嵌套传递吗?
如果我希望一开始登录按钮是不可用的 , 界面上用户名和密码都为空, 当用户密码都输入有值时登录按钮才会变为可用. ------ 类似这样的需求我应该如何实现会优雅点? 我现在想到的是在 User 内做event , LoginViewModel 来注册这个事件.

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