操纵键盘输入 [英] Manipulating Keyboard Input

问题描述

您好专家，

如何在编辑框内操作输入，
假设

当编辑框具有焦点，并且我们按一个键(例如字母"A")时，我希望将其显示为字母"B"而不是"A"，

在所有不同的键盘事件中，这是操作此功能的最佳位置，我尝试了几次，但均未成功.

KeyDown，
KeyPress
KeyUp
PreviewKeyDown


请提出建议.

问候Prateek.

Hello Experts,

How can i manipulate the input inside a edit box,
let''s suppose,

when a edit box has a focus, and we press a key (say letter ''A''), i want it to be displayed as letter ''B'' instead of ''A'',

which is is the best place to manipulate this, among all different keyboard events, i tried it several places but no success.

KeyDown,
KeyPress
KeyUp
PreviewKeyDown


please suggest.

regards Prateek.

推荐答案

KeyPress会添加其他事件参数，以便您更好地分析键盘事件

KeyPress would do it has additional event arguments so you can better analyza keyboard events

嘿，最好的事件是KeyDown，在处理程序中只需取消KeyEventArgs，

Hey the best event is KeyDown, at handler just cancel KeyEventArgs,

private void Form1_KeyDown(object sender, KeyEventArgs e)
        {
            Keys k = (Keys)sender;
            if(k.GetType = Keys.A)
            e.Handled = false; // to check it to fulfill
            
            // Do as your wish
        }

希望对您有帮助..

Hope it would help you..

处理TextBox的TextChanged事件.

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