Exercise $8-2$ Create and use a class library

In this exercise, you'll create a class library that includes the Invitem and InvitemDB classes of the Inventory Maintenance application from Exercise $8-1$ above. Then, you'll use that class library with the Inventory Maintenance application.

Create the Class Library project

Extract the provided start project $($w$08$ Exercise Project Starts.zip$),$ which creates the "Inventorymaint with Library" folder. Don't open the folder yet.

Create a new Class Library project named "InventoryLibrary" in the "InventoryMaint with Library" folder extracted above.

In the InventoryLibrary class library project, delete the empty Class$1.$cs class, and add the Invitem and InvItemDB classes from the Inventory Maintenance project in the same directory.

Change the namespace in both of the classes you just added so it's a namespace named Inventory nested within a namespace with your last name.

Change the solution configuration for the class library to Release, and then build the class library. When you're done, close the solution.

Modify the Inventory Maintenance application to use the library

$6.$ Open the InventoryMaintenance project.

$7.$ Delete the Invitem.cs and InvItemDB.cs files, and then add a reference to the InventoryLibrary assembly you created in step $4.$

$8.$ Display the code for the Inventory Maintenance form, and add a using directive for the namespace you created in step $3.$ Do the same for the New Item form.

$9.$ Test the application to be sure it still works.