C# PLEASE INCLUDE ALL TOOLBOX TOOLS YOU HAVE BEEN USING IN YOUR DESIGNED FORM Create a program with OpenFileDialog that will receive customer name, number, address, and amount spent to calculate the percentage of the discount and display it to the user.

A retail store has a preferred customer plan where customers can earn discounts on all their purchases. The amount of a customers discount is determined by the amount of the customers cumulative purchases in the store as follows:

• When a preferred customer spends $500, he or she gets a 5 percent discount on all future purchases.

• When a preferred customer spends $1,000, he or she gets a 6 percent discount on all future purchases.

• When a preferred customer spends $1,500, he or she gets a 7 percent discount on all future purchases.

• When a preferred customer spends $2,000 or more, he or she gets a 10 percent discount on all future purchases.