C# Windows form please, Thank you guys again for all your awesome help.

I'm stuck on the coding for the groupboxes, and doing the mathematical calculations at the end to add up all the totals.

In this exercise, youll complete a form that accepts a lunch order from the user and then calculates the order subtotal and total.

The application should provide for these main courses and add-ons:

Main course Price Add-on Add-on price

Hamburger 6.95 Lettuce, tomato, and onions .75

Ketchup, mustard, and mayo French fries

Pizza 5.95 Pepperoni .50 Sausage Olives

Salad 4.95 Croutons .25 Bacon bits Bread sticks

1. Open the LunchOrderStart project in the Assignment8\EX2_LunchOrder directory.

2. Add three radio buttons to the Main Course group box, and set their properties so they appear as shown above.

The Hamburger option should be selected by default.

3. Add a group box for the add-on items. Then, add three check boxes to this group box as shown above.

None of the check boxes should be selected by default.

4. Code a method name ClearTotals that clears the three text boxes and a method named ClearAddOns that removes the check marks from the three check boxes.

5. Code an event handler that changes the text thats displayed for the Add-ons group box and the three check boxes when the user selects a different main course.

This event handler should also remove the check marks from the add-ons and clear the order totals. Test the application to be sure this works correctly.

6. Code an event handler that calculates and displays the subtotal, tax, and order total when the user clicks the Place Order button.

The subtotal is the cost of the main course plus the cost of the add-ons. The tax is 7.75% of the subtotal. And the order total is the subtotal plus the tax.

Test the application to be sure this works correctly.

7. Code an event handler that clears the order totals when the user checks or unchecks an add-on. Then, test the application one more time.

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms;

namespace LunchOrder { public partial class Form1 : Form { public Form1() { InitializeComponent(); } const decimal SalesTaxPct = 0.0775m;

// private void btnPlaceOrder_Click(object sender, EventArgs e) // { //... // }

// private void MainCourse_CheckedChanged(object sender, EventArgs e) // { //... // }

// private void ClearTotals() // { //... // }

// private void ClearAddOns() // { //... // }

// private void ChangeAddOns(object sender, EventArgs e) //... // } private void btnExit_Click(object sender, EventArgs e) { Close(); }

} }

a Lunch Order Main course Addon items ($.75Meach) o Hamburger $6.95 Lettuce tomato, and onions Ketchup, mustard, and mayo O Pizza -$595 French fries Salad -$4.95 Order total Place Order Subtotal: $845 Tax (.75%): $0.65 Order total: $9.10