如何在c＃windows应用程序中捕获enter键事件而不是使用图形按钮 [英] how to catch an enter key event in c# windows application rather than using a graphical button

问题描述

如何在c＃Windows apllication中捕获回车键事件而不是使用图形按钮？

解决方案

使用按键向下 [ ^ ]活动

  private   void  Form1_KeyDown（ object  sender，KeyEventArgs e）
 {
  if （e.KeyCode == Keys.Enter）
 {
 MessageBox.Show（ 按下输入键）; 
} 
} 

如果要在任何控件之前捕获整个表单的'Enter KeyDown事件'在表格上收到KeyDown活动：



1.将Form的KeyPreview属性设置为'true



2.为Form的KeyDown事件连接一个EventHandler：

  private   bool  IsEnterSeen =  false ; 
 
  private   void  Form1_KeyDown（ object  sender，KeyEventArgs e）
 {
 IsEnterSeen = e.KeyCode == Keys.Enter; 
 
  //  如果'IsEnterSeen =='true  $ b，请执行此操作
 $ b} 

如果您想获得整个表格的'Enter KeyPress事件，并且您想要取消'Enter键的进一步处理：

  private   char  enterChar =（ char ）  13 ; 
 
  private   void  Form1_KeyPress（ object  sender，KeyPressEventArgs e）
 {
 IsEnterSeen = e.KeyChar == enterChar; 
 
  //  如果'IsEnterSeen =='true  $ b，请执行此操作
 $ b  //  取消对Enter键的进一步处理： 
 < span class =code-comment> //   if（IsEnterSeen）e.Handled = true;  
 
} 

how to catch an enter key event in c# Windows apllication rather than using a graphical button?

解决方案

use key down[^] event

private void Form1_KeyDown(object sender, KeyEventArgs e)
       {
           if (e.KeyCode == Keys.Enter)
           {
               MessageBox.Show("Enter key pressed");
           }
       }

If you want to catch the 'Enter KeyDown Event for the entire Form ... before any of the Controls on the Form receive the KeyDown Event:

1. set the Form's KeyPreview Property to 'true

2. wire-up an EventHandler for the Form's KeyDown Event:

private bool IsEnterSeen = false;

private void Form1_KeyDown(object sender, KeyEventArgs e)
{
    IsEnterSeen = e.KeyCode == Keys.Enter;

    // take action here if 'IsEnterSeen == 'true

}

If you want to get the 'Enter KeyPress Event for the entire Form, and you want to cancel the further processing of the 'Enter key:

private char enterChar = (char)13;

private void Form1_KeyPress(object sender, KeyPressEventArgs e)
{
    IsEnterSeen = e.KeyChar == enterChar;

    // take action here if 'IsEnterSeen == 'true

    // to cancel further processing of the Enter Key:
    // if(IsEnterSeen) e.Handled = true;

}

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