Chapter 7, Problem 18E

There are three seating categories at a high school athletic stadium. For a baseball game, Class A seats cost $15 each, Class B seats cost $12 each, and Class C seats cost $9 each. Create an application that allows the user to enter the number of tickets sold for each class. The application should be able to display the amount of income generated from each class of ticket sales and the total revenue generated. If the user fails to enter numeric values, display an appropriate error message and do not attempt to perform calculations. Use the following test data to determine if the application is calculating properly:Ticket Sales RevenueClass A: 320 Class A: $4800.00Class B: 570 Class B: $6840.00Class C: 890 Class C: $8010.00Total Revenue: $19650.00Class A: 500 Class A: $7500.00Class B: 750 Class B: $9000.00Class C: 1200 Class C: $10800.00Total Revenue: $27300.00Class A: 100 Class A: $1500.00Class B: 300 Class B: $3600.00Class C: 500 Class C: $4500.00Total Revenue: $9600.00 Use Visual…

The application displays a shipping charge that is based on the total price entered by the user, as shown in Figure 4-64. Start the application and then test it by clicking the Display shipping button. Notice that the Shipping charge box contains $13, which is not correct. Now, test the application using the following total prices: 100, 501, 1500, 500.75, 30, 1000.33, and 2000. Here too, notice that the application does not always display the correct shipping charge. (More specifically, the shipping charge for two of the seven total prices is incorrect.) Open the Code Editor window and correct the errors in the code. Save the solution and then start and test the application.

Create an application that lets the user enter his or her weight (in pounds) and height (in inches). The application should display the user’s body mass index (BMI). The BMI is often used to determine whether a person is overweight or underweight for his or her height. A person’s BMI is calculated with the following formula:                               BMI = weight × 703 ÷ height2

The dblBonus variable contains the number 1234.75. Write the assignment statement to display the value with a dollar sign, a thousands separator, and no decimal places in the lblBonus control.

Bright Brains Private Elementary School has three classrooms in each of seven grades, kindergarten (grade 0) through grade 6, and allows parents to pay tuition over the nine-month school year. Design the application using flowchart that outputs nine tuition payment coupons for each of the 21 classrooms. Each coupon should contain the grade number, the classroom number, the month, and the amount of tuition due. Tuition for kindergarten is $80 per month. Tuition for the other grades is $60 per month times the grade level.

Many financial experts advise that property owners should insure their homes or buildings for at least 80 percent of the amount it would cost to replace the structure. Create an application that lets the user enter the replacement cost of a building and then displays the minimum amount of insurance he or she should buy for the property.

3. Solar Panel InstallationThe Megawatt solar panel company installs solar panels on home rooftops. The base installation charge of $2,000 includes two panels. The charge for each additional panel is $300. The normal waiting time for installation is two weeks, but customers can pay an express charge of 5% of the total cost to reduce this time. Create an application that collects the required information from the user and calculates the charges for the installation.The user should input the following information: first name, last name, phone, number of panels, deposit amount, and a check box for the express installation option. When the user clicks a button to view the charges, display a group box containing the following information: base installation charge, cost of installing additional panels, total installation cost, deposit amount, and balance due.Error checking should include the following criteria:• The name and phone fields cannot be blank• The number of panels must be an…

If the user clicks the Cancel button in a message box, the MessageBox.Show method returns the integer 2, which is represented by which DialogResult value?

True or False : When you assign an access key to a button, the user can trigger a Click event by typing Alt+ the access key character