number of hours the mechanic worked

Develop a Windows Forms application to calculate and display auto repair cost based on the mechanic’s hourly rate, number of hours the mechanic worked, and any additional charges such as parts, disposal fees, storage fees, and/or towing fees. Repair charges must be displayed along with the tax (assume an 8.25% tax rate) and the total charge (repair cost + tax). As a promotional offer, an optional 10% discount off of the repair charge must also be provided.