object oriented programing questions

Question

Create a Book Structure that contains the Title, Author, and ISBN fields. Then create a Library class that contains a collection of your books Write methods for adding books and finding books.

Sachin Singh · Answer

A quick demo public   class  Book     {     public   string  Title { get ; set ;}     public   string  Author { get ; set ;}     public   string  ISBN { get ; set ;}           }                public   class  BookStore     {       List  bookList = null ;        public  List  FillData()     {       bookList = new  List  ()     {     new  Book(){Title= "title1" ,Author= "Author1" ,ISBN= "bbsk1234" },     new  Book(){Title= "title2" ,Author= "Author2" ,ISBN= "bbsk1235" }     new  Book(){Title= "title3" ,Author= "Author3" ,ISBN= "bbsk1236" }     new  Book(){Title= "title4" ,Author= "Autho4" ,ISBN= "bbsk1237" }           } ;     return  bookList;     }           public   void  AddBook(Book book)     {     bookList.Add(book);     }     public  Book FindBookByTitle( string  title)     {       return   FillData().Where(x=>x.Title==title).SingleOrDefault();     }     }                 static   void  Main()     {          BookStore bs=  new  BookStore();          Book book = new  Book(){Title= "myBook" ,Author= "Sachin" ,ISBN= "1234bbbb" } ;          bs.AddBook(bs);          var book = bs.FindBookByTitle( "title2" );        console.WriteLine(book.ISBN);     }
Note:- i have done everything in-memory , if you want you can use database to store information.

Rajanikant Hawaldar · Answer

check below article   https://www.c-sharpcorner.com/UploadFile/ea3ed6/database-design-for-library-management-system/