How do I make an application respond to keyboard events?

hflovesy

Such as:
When you press the space bar, the program behaves.
How to achieve it? Thank you!

660158

winfrom:
 private void textBox_BarcodeEntry_KeyUp (object sender, KeyEventArgs e)
        {
                switch (e.KeyCode)
                {
                    case Keys.Sapce:
                     break;

                }
            
         }
webfrom:
<script language = "javascript">
function document.onkeypress ()
{
if (window.event.keyCode == 13)
 {
            // 13 is the enter key
         }
}
</ script>

254098063

javascript can achieve
If it should be a program, then it goes without saying that it has its own keyboard events.

hflovesy

No, the program didn't respond.