Help on that also guys

Question

Code a windows form application for City of Windhoek. The application’s interface allows
the user to select the rate code from a radio button, either residential or commercial, enter
the previous meter reading, and the current meter reading. When the user clicks the
Calculate button, the button click event procedure should verify that the current meter
reading is greater than or equal to the previous meter reading. If it is, the application should
calculate and display the number of electrical units used during the month and also the total
charge. The total charge is based on the number of units used and the rate code. Residential
customers are charged $0.09 per unit, with a minimum charge of $17.65. Commercial
customers are charged $0.12 per unit, with a minimum charge of $21.75. If the current
meter reading is less than the previous meter reading, the application should display an
appropriate error message. Add two methods to this application.

Answer 1

Please show your attempt.