WinForm处理键盘事件

默认设置下,WinForm是不处理键盘事件的,而是转发给下面的控件来处理。

要改修改这个行为,把KeyPreview属性设为True就可以了。以下是帮助文档的说明:

When this property is set to true, the form will receive all KeyPress, KeyDown, and KeyUp events. After the form’s event handlers have completed processing the keystroke, the keystroke is then assigned to the control with focus. For example, if the KeyPreview property is set to true and the currently selected control is a TextBox, after the keystroke is handled by the event-handling methods of the form the TextBox control will receive the key that was pressed. To handle keyboard events only at the form level and not allow controls to receive keyboard events, set the KeyPressEventArgs.Handled property in your form’s KeyPress event-handling method to true.

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