nataschaj/bookcatalog_v1

BookCatalog_v1

Clone the C# project BookCatalog_v1.  

This exercise illustrates the concept of a catalog. A catalog is a class that can store and use data of a certain type, without revealing the specific representation of data to the user of the catalog.

The project contains the simple data class Book (note however that we consider the instance field isbn to be a “key” for Book, i.e. no two Book objects can have the same isbn value).  Also, it contains the (incomplete) catalog class BookCatalog. The three public methods in BookCatalog allow the user to store and use Book objects in a simple way (see the comments in the code for more details about each method).  

Given that we have chosen to use a List to store Book objects internally in the BookCatalog class, your job is now:  

1. Complete the three methods in the BookCatalog class.

2. Study the test written in InsertCodeHere.cs, and figure out what you expect the test to output.

3. Run the program, and see if the output of the test matches your expectations (if not, you will have to examine the test and your code once again…)

4. Is there anything in the program that prevents a user from entering two Book objects with the same isbn value?