xaml 中的嵌套属性语法

发布于 2024-12-13 08:58:35 字数 967 浏览 0 评论 0原文

我有嵌套对象，在 xaml 中定义。例如，我有这样的代码（utils:HotkeyCommand 是代码隐藏中的 MarkupExtension 类）：

<dxb:BarButtonItem>
  <dxb:BarButtonItem.Command>
    <utils:HotkeyCommand />
  </dxb:BarButtonItem.Command>
</dxb:BarButtonItem>

它看起来相当笨拙，所以我决定按以下方式重写它（并且效果很好） ):

<dxb:BarButtonItem Command="{utils:HotkeyCommand}" />

之后，我想在我的原始代码中定义一些属性：

<dxb:BarButtonItem>
  <dxb:BarButtonItem.Command>
    <utils:HotkeyCommand CanExecuteNotifier="{StaticResource GeneralEnabled}" Executed="test" Gesture="Ctrl+N" />
  </dxb:BarButtonItem.Command>
</dxb:BarButtonItem>

如何以相同的方式将此代码重写为一行？

我想要得到类似以下的内容（但它无法编译）。是否有任何规则可用于将一种表示法转换为第二种表示法？

<dxb:BarButtonItem Command="{utils:HotkeyCommand CanExecuteNotifier={StaticResource GeneralEnabled}, Executed={test}, Gesture={Ctrl+N}}" />

原文

I have nested object, defined in xaml.
For example, I had a code like this (utils:HotkeyCommand is my MarkupExtension class in code-behind):

<dxb:BarButtonItem>
  <dxb:BarButtonItem.Command>
    <utils:HotkeyCommand />
  </dxb:BarButtonItem.Command>
</dxb:BarButtonItem>

which looked rather clumsy, so I decided to rewrite it in the following way (and this worked fine):

<dxb:BarButtonItem Command="{utils:HotkeyCommand}" />

After that, I want to define some properties in my original code:

<dxb:BarButtonItem>
  <dxb:BarButtonItem.Command>
    <utils:HotkeyCommand CanExecuteNotifier="{StaticResource GeneralEnabled}" Executed="test" Gesture="Ctrl+N" />
  </dxb:BarButtonItem.Command>
</dxb:BarButtonItem>

How can I re-write this code to a single line in the same manner?

I want to get something like following (but it doesn't compile). Are there any rules, that can be used to transorm one notation to the second one?

<dxb:BarButtonItem Command="{utils:HotkeyCommand CanExecuteNotifier={StaticResource GeneralEnabled}, Executed={test}, Gesture={Ctrl+N}}" />

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本王不退位尔等都是臣 2024-12-20 08:58:35

最后，我在 x0r 的答案的帮助下使它工作（它去了哪里？）

 <dxb:BarButtonItem Command="{utils:HotkeyCommand {StaticResource GeneralEnabled}, Executed=test, Gesture=Ctrl+N}" />

除了删除括号之外，我还必须更改：

将 Executed 从事件更改为属性持有委托
为了能够从资源使用 HotkeyCommand，我必须在 MarkupExtension 中使用参数创建一个构造函数，如下所述此处

Finally I made it working with the help of x0r's answer (where has it gone?)

 <dxb:BarButtonItem Command="{utils:HotkeyCommand {StaticResource GeneralEnabled}, Executed=test, Gesture=Ctrl+N}" />

In addition to removing brackets I also had to change:

Change Executed from event to a property holding a delegate
To make possible using HotkeyCommand from a resource, I had to create a constructor in MarkupExtension with a parameter, as described here

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