how to return (F1) from 113 key value ?

Question

when I press F2 then following code in my form keydown event return 113

 MessageBox.Show(e.KeyValue.ToString());//If pressed key is F2 ->113

but when I want to get the Char from KeyValue from following code then it return "q"

 MessageBox.Show(Char.ConvertFromUtf32(113));//return q

how can I reach to F2 from 113 keyvalue ?

Answer 1

As its a KeyCode cast to the Keys enum?

((Keys)e.KeyValue).ToString();

Answer 2

Typically, the function keys are not actually characters. Frequently, they are mapped as key combinations, like (0, 113). Why do you want the character code for F2?

Answer 3

The reason you are getting the letter q when you try and get the char value of 113 is because it maps to the ASCII value of q

And to answer the rest of your question

ascii codes for windows keyboard keys and the codes for function keys(F1 - F12) and other keys like shift,capslock,backspace,ctrl etc

I found this article here http://bytes.com/topic/c-sharp/answers/429451-keycode-keyvalue-keydata

There are KeyUp, KeyDown and KeyPress event. Only the KeyPress event supplies the character code. I don't say ASCII because this code depends on the current language settings; even one code can be generated as a result of pressing a sequence of keys. Even in the simplest cases with English language settings there is no 1:1 mapping between keys and character codes e.g. key A produces ASCII for 'a' or key A produces ASCII for 'A' if cpaslock is on or shift is pressed or 'a' of both capslock is on and shift is pressed, etc. Even more there are keys that don't produce ASCII codes - ctrl, alt, shift, F1, F2., Fx, windows keys, etc