Standard Calculator in Windows Mobile App

Design a standard calculator in windows mobile.

Description: The following program is a standard calculator. This program operates and functions like a standard calculator.

Events Used :
btn0_click() = Inputs the value of button 0
btn1_click() = Inputs the value of button  1
btn2_click() = Inputs the value of button  2
btn3_click() = Inputs the value of button  3
btn4_click() = Inputs the value of button  4
btn5_click() = Inputs the value of button  5
btn6_click() = Inputs the value of button  6
btn7_click() = Inputs the value of button  7
btn8_click() = Inputs the value of button  8
btn9_click() = Inputs the value of button  9
 btnadd_click(), btnequal_click() = mathematical operations.

Methods Used:
Result() = Performs various arithmetic operations.Using() the switch() methods each case performs + , - , * , / .

Namespace used:
System windows forms :- The namespace contains classes for creating window based applications that take full advantage of the rich user interface features available in the Microsoft windows operating system.