Add to the application in Exercise 5 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 sorted. Using methods of the string class,
retrieve and use the price from the listbox. The shipping charges are based on
the total purchase. The following percentages are used: overnight—10%; three
day—7%; and standard—5%. Display in a message box the shipping charge
along with the selection, quantity, and total cost.