Add to the application in Exercise 6 by including a control that allows the user to determine the type of shipping they desire. Include a set of radio buttons that contain shipping options of overnight, three day, and standard. Add the price for each bag to the listbox selection as follows:

full decorative—$50.00; beaded—$45.00; pirate design—$40.00;

fringed—$25.00; leather—$80.00; and plain—$20.00. Display the items in the listbox in sort order. Using methods of the string class, retrieve the price from the listbox. Display in a Windows dialog message box the total cost for the purchase. Include the selection, quantity, and shipping charge.

The shipping charges are based on the total purchase. The following percentages are used: overnight—10%, three day—7%, and standard—5%.