Reference no: EM132319749

Assignment - Use inheritance with the Inventory Maintenance application

In this exercise, you'll add two classes to the Inventory Maintenance application that inherit the InvItem class. Then, you'll add code to the forms to provide for these new classes.

1. Open the InventoryMaintenance project in the InventoryMaintenance directory. Then, review the code for the New Item form to see that the items in the combo box and the label for the combo box depend on which radio button is selected.

2. Display the InvItem Class and modify the GetDisplayText method so it's overridable.

3. Add a class named Plant that inherits the InvItem class. This new class should add a string property named Size. It should also provide a default constructor and a constructor that accepts four parameters (item number, description, price, and size) to initialize the class properties. This constructor should call the base class constructor to initialize the properties defined by that class. Finally, this class should override the GetDisplayText method to add the size in front of the description, as in this example: 3245649 1 gallon Agapanthus ($7.95)

4. Add another class named Supply that inherits the InvItem class and adds a string property named Manufacturer. Like the Plant class, the Supply class should provide a default constructor and a constructor that accepts four parameters, and it should override the GetDisplayText method so the manufacturer is added in front of the description like this: 9210584 Ortho Snail pellets ($12.95)

5. Modify the event handler for the Click event of the Save button on New Item form so it creates a new item of the appropriate type using the data entered by the user.

6. Test the application by adding at least one of each type of inventory item.

Attachment:- Assignment Files.rar