在 WPF 中实现 ApplicationCommands.Copy？
我刚刚使用 Command = "ApplicationCommands.Copy" 创建了一个菜单，我认为我必须处理绑定的 Executed 事件，并添加一个绑定，但我只是不这样做不需要。
现在我很困惑！
这个命令的执行在哪里呢？它如何自动复制在窗口中的任何文本框中选择的文本？
谢谢！
I just created a menu with Command = "ApplicationCommands.Copy" and I thought I had to handle the Executed event of the binding, and add a binding but I just don't need to.
Now I'm confused!
Where is the implementation of this command? How can it automatically copy a text selected in any of the textboxes I have in my window?
Thanks!
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您如何验证是否不需要处理命令的
Executed事件 - 是否使用内置的TextBox？如果是这样，您不必处理它的原因是因为TextBox已经处理该命令（因为它是内置的）。对于其他编辑命令 - 剪切、粘贴、撤消、重做（可能还有其他命令）也是如此。如果您使用自己的自定义命令，那么您需要处理其
Executed事件，如您在问题中所述。How did you verify that you didn't need to handle the
Executedevent of the command - was it with the built-inTextBox? If so, the reason that you don't have to handle it is because theTextBoxhandles that command already (since it is built-in). The same is true for the other edit commands - Cut, Paste, Undo, Redo (and probably others as well).If you were using your own custom command, then you would need to handle its
Executedevent, as you stated in your question.