在C＃WPF只读复选框 [英] A read-only CheckBox in C# WPF

问题描述

我有一个棘手的问题，我想从一个复选框微微有些不寻常的行为，似乎无法弄清楚。任何建议将是最受欢迎的。我想要的行为是：

I am having a tricky problem, I want some slightly unusual behaviour from a checkbox and can't seem to figure it out. Any suggestions would be most welcome. The behaviour I want is:

1. 的复选框被启用并准备为用户点击，重器isChecked presents存储在数据结构绑定布尔值


2. 用户点击复选框导致点击触发事件，但在数据结构中的绑定值不更新和CheckBox的视觉重新presentation不更新，但被禁用，停止进一步点击


3. 单击事件触发消息发送到远程设备这需要一些时间来响应


4. 远程设备响应造成的数据结构与新值，绑定然后更新状态器isChecked和复选框被重新启用，进一步点击

我的问题是，虽然单向数据在不更新单击该复选框，当数据结构结合的作品，视觉重presentation确实发生了改变（我认为这是奇怪的，不应该现在行动器isChecked像的指针在数据结构中的值）。

The problem I have is that although a OneWay data binding works at not updating the data structure when the CheckBox is clicked, the visual representation does change (which I think is odd, shouldn't IsChecked now act like a pointer to the value in the data structure).

我可以扭转在Cl​​ick（）事件的变化，做好禁用有作为但这是pretty凌乱。我也可以的数据结构值来设置它也必然要重新启用复选框的isEnabled值的设定财产，但似乎过于凌乱

I can reverse the change in the Click() event and do the disable there as well but this is pretty messy. I can also have the set property of the data structure value to set an isEnabled value which is also bound to reenable the CheckBox but that seems messy too.

有没有干净的方式做到这一点？也许派生CheckBox类？我怎样才能阻止视力重新presentation得到更新？

Is there a clean way to do this? Perhaps with a derived CheckBox class? How can I stop the visual representation getting updated?

感谢

版

推荐答案

有关数据绑定到的 IsHitTestVisible 的财产？

What about data binding to the IsHitTestVisible property?

例如，假设一个MVVM方式：

For example, assuming an MVVM approach:

1. 添加的 IsReadOnly 的属性，您的视图模型，初步设置为true，以允许点击。


2. 绑定这个属性来CheckBox.IsHitTestVisible。


3. 第一次点击之后，更新您的视图模型这个值设置为false，preventing任何进一步的点击。

1. Add a IsReadOnly property to your view model, initially set as true to allow click.
2. Binding this property to CheckBox.IsHitTestVisible.
3. After the first click, update your view model to set this value to false, preventing any further clicks.

我没有这个确切的要求，我只是需要一个始终只读复选框，它似乎很好地解决这个问题。还要注意以下戈兰的评论有关的可聚焦的属性。

I don't have this exact requirement, I just needed an always read only checkbox, and it seems to solve the problem nicely. Also note Goran's comment below about the Focusable property.

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