How to convert javascript keycode to proper keycode?

Question

Is there a way I can convert a javascript keycode into one that is used by C#?

For example 87 is the character 'w' in javascript, but in C# it's 57. And 77 is 'm' whereas it's 4D in C#. Is there a simple way to convert them? Thanks.

But shouldn't "w" be 199 = 0x77 = 0167? "W" is 87 = 0x57 = 0127. — D.Shawley
– D.Shawley, Commented Jun 6, 2012 at 1:54
@D.Shawley: Key codes don't distinguish between upper- and lower-case letters. There's a shiftKey/Shift property for that. — Ry-
– Ry- ♦, Commented Jun 6, 2012 at 1:55
Ah, yeah sorry. Was looking at this list delphi.about.com/od/objectpascalide/l/blvkc.htm and it didn't have the lower 'w' so didn't take much notice. — Joey Morani
– Joey Morani, Commented Jun 6, 2012 at 1:56
@minitech - character codes in JavaScript definitely do not discard case - "w".charCodeAt(0) is 199 and "W".charCodeAt(0) is 87. It sounds like they do in C# though. Learn something new every day. — D.Shawley
– D.Shawley, Commented Jun 6, 2012 at 2:00
@D.Shawley: I'm talking about the keydown event - key codes, not character codes. C# works the same way; otherwise, there would be some ASCII problems! :) Here's an example jsFiddle. — Ry-
– Ry- ♦, Commented Jun 6, 2012 at 2:00

Ry- · Accepted Answer · 2012-06-06 01:51:25Z

7

The issue isn't that they're different; your C# ones are just in hexadecimal.

87₁₀ = 57₁₆
77₁₀ = 4D₁₆

Just treat them as ints, not as strings, and you'll be fine.

answered Jun 6, 2012 at 1:51

Ry-♦

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1 Comment

Joey Morani Over a year ago

Thanks! Never knew that. And yeah, it works as ints intead of strings. Thanks again.

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