keypress evets

You can create a number of handlers of every key event. It will help to separate the logic of key press processing. The key as sender should contain the reference to array of its possible values (it may be simple string – because the string already is the array of chars) and, on this event you can easy decide (according state (calculator or phone or sms input) – what char to take – number for calc and phone mode but next char (if sender is the same button) in sms mode.

hi,
  I am actually trying for the code which works for muti purpose use. We have button keypress events for all buttons of calculator i.e only numbers and button keypress events for mobile phone keypad where we have multiple keypress for one button like [wxyz9] for button '9'. This is to be done with non-generic events like button_keypress.

As simplest (but not the best) way – you should add to you program a Boolean variable

"SystemInCalculatorMode" – and use it to call proper method:

 

if (SystemInCalculatorMode)

{

            DoCalcOpreations();

}

else

{

            DoDealingOperations();

}

 

But this is only beginning….

When  you will need other modes – add an enum like

 

public enum SysMode

{

Calc,

            Phone,

            StopWhatch

}

 

 

And so on - up to the pattern "State mashine".

 ;-)