Reference no: EM13933238
8.1 1 (Enhanced Dental Payment Application) Modify the Dental Payment application from this tutorial to include additional
services. Add the proper func- tionality (using If... Then statements) to determine whether any of the new CheckBoxes are
selected, and, if so, add the price of the service to the total bill. Display an error message in a dialog if the user selects the
Other CheckBox but does not specify a price for the service.
a) Copying the template to your working directory. Copy the directory C: Exampl es Tutori al 08Exerci sesDental
PaymentEnhanced to your C: Si mpl yVB2008 directory.
b) Opening the application's template file. Double click Dental PaymentEn- hanced. sl n in the Dental PaymentEnhanced
directory to open the application.
c) Adding CheckBoxes, Labels and a TextBox. Add two CheckBoxes and two Label s to the Form. The new CheckBoxes should
be labeled Fluoride and Root Canal, respec- tively. Add these CheckBoxes and Label s beneath the X-Ray CheckBox and its
price Label . The price for a fluoride treatment is $50; the price for a root canal is $800. Add a CheckBox labeled Other and a
Label containing a dollar sign ($) to the Form, as shown in Fig. 8.25. Then add a TextBox to the right of the $ Label in which
the user can enter the cost of the service performed.
d) Modifying the Click event handler code. Add code to the cal cul ateButton_Cl i ck event handler to determine whether the
new CheckBoxes have been selected. This can be done by modifying the compound condition in the first If... Then statement
in the event handler. Add an El seIf clause to determine if the user selected the Other CheckBox but did not specify a price? if
so, display an error message in a dialog. Also, use If... Then statements to update the bill amount.
e) Running the application. Select Debug > Start Debugging to run your application. Test your application by checking one or
more of the new services. Click the Calcu-late Button and verify that the proper total is displayed. Test the application again by
checking some of the services, then checking the Other CheckBox and entering a dol- lar value for this service. Click the
Calculate Button and verify that the proper total is displayed, and that it includes the price for the "other" service.
f) Closing the application. Close your running application by clicking its close box.
g) Closing the IDE. Close the Visual Basic IDE by clicking its close box.
Attachment:- Tutorial08[1].zip
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