在 WPF 文本框中使用箭头键 (C#) [英] Working with Arrow Keys in a WPF Textbox (C#)

问题描述

有什么方法可以捕捉 WPF 文本框 (System.Windows.Controls.Textbox) 中的向上/向下箭头键并允许它们更改文本?我已经阅读了关于覆盖 Windows 窗体文本框 (System.Windows.Forms.TextBox) 的 ProcessCmdKey 方法的信息，它运行良好，但是 TextBox 不如 WPF 灵活.有没有类似的方法可以在不使用旧的 Windows 窗体 TextBox 的情况下完成此操作?

Is there any way to catch the Up/Down arrow keys in a WPF TextBox (System.Windows.Controls.Textbox) and allow them to alter the text? I've read about overiding the ProcessCmdKey method for a Windows Forms TextBox (System.Windows.Forms.TextBox), and it worked fine, but that TextBox is not nearly as flexible as the WPF one. Is there a similar method to accomplish this without having to use the old Windows Forms TextBox?

对于我的示例，我有一个带有数字文本掩码的 TextBox.我希望能够通过使用向上和向下箭头键来增加/减少数值.

For my example, I have a TextBox that has a numeric text-mask. I want to be able increase/decrease the numeric value by using the up and down arrow keys.

推荐答案

您可以将事件处理程序添加到 KeyUp 和/或 KeyDown，如果这不能满足您的需求，请使用 PreviewKeyUp 和/或 PreviewKeyDown.

You could add event handlers to KeyUp and/or KeyDown, if that doesn't get what you need, using PreviewKeyUp and/or PreviewKeyDown should.

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