Arithmetic Calculator Application
Write an application that allows the user to enter a series of numbers and manipulate them. The application should provide users with the option of adding or multiplying the numbers. Users should enter each number in a TextBox. After entering each number, the user clicks an Enter Button, and the number is inserted in a ListBox. If the result of a previous calculation is displayed, the Enter Button's event handler should clear the result, clear the ListBox and disable the Add and Multiply Buttons. It should then insert the current number in the Operands list: ListBox. When the ListBox contains at least two numbers, the event handler should enable the Add and Multiply Buttons. The GUI should behave as shown :
