ASP.NET Shortcut Keys

Technology

ASP.Net & Javascript

Introduction

There are several reasons why you may want to capture the key press event in a browser window. Looking for something like that means that you work as a professional. We will see how you can achive that in internet explorer.

Key codes

In the beginning we will see a list of most used keys with related IE key codes:

• Alphabetic keys (A~Z): ASCII code of uppercase version of the letter 65 to 90
• Space : 32
• Enter : 13
• Tab : 9
• ESC : 27
• Backspace : 8
• Shit : 16
• Control : 17
• Alt : 18
• Caps : 20
• Num : 144
• 0 ~ 9 : 48 ~ 57
• Left : 37
• Up : 38
• Right : 39
• Down : 40
• F1 ~ F12 : 112 ~ 123 (I want here to tell you a note about F1)

Implementation
// javascript code
document.onkeyup = KeyCheck;
function KeyCheck(){var KeyID = event.keyCode;switch(KeyID){ .... }

Notes

If you want to catch a function Keys F1 ~ F10

IE events will still be applied for that F key for example F5 will refresh the page.

in this case you have to add the following lines to prevent passing the event to IE :

event.keyCode = 0;

event.returnValue = false;

in case of F1 :

if(document.onhelp == null)

document.onhelp = function() { return false; }

The above is only works for IE

Comments and Questions are welcomed