c# - C#/WPF: Catch Routed Event (UIElement.PreviewKeyUp) from UserControl

Question

I've a UserControl which contains a TextBox called myTextBox. This UserControl is placed in a MainWindow.xaml where I'm trying to catch the "UIElement.PreviewKeyUp".

Now when debugging, I can see the "UserControl" as sender, not the TextBox. How can I check if the KeyEventArgs e (especially e.Key) were sent from the TextBox called myTextBox?

Thanks for any help.

Cheers

Answer 1

您可以找到它作为 e.Source 属性。尝试将其转换为“TextBox”，如果成功，您可以检查“myTextBox”的 Name 属性。

[评论后编辑]

如果 TextBox 在 UserControl 内，则可以使用事件的 OriginalSource 属性。