public void AddBook(Book newBook)
{
try
{
BookDataContext bookData = new BookDataContext();
bookData.Books.InsertOnSubmit(newBook);
bookData.SubmitChanges();
}
catch (Exception ex)
{
throw new Exception("Error:" + ex.Message);
}
}
public void DeleteBook(Book deletebook)
{
try
{
BookDataContext bookData = new BookDataContext();
Book book = bookData.Books.SingleOrDefault(b => b.BookID.Equals(deletebook.BookID));
bookData.Books.DeleteOnSubmit(book);
bookData.SubmitChanges();
}
catch (Exception ex)
{
throw new Exception("Error: " + ex.Message);
}
}
public void Update(Book updateBook)
{
try
{
BookDataContext bookData = new BookDataContext();
Book book = bookData.Books.SingleOrDefault(b => b.BookID.Equals(updateBook.BookID));
book.BookPrice = updateBook.BookPrice;
book.BookTitle = updateBook.BookTitle;
bookData.SubmitChanges();
}
catch (Exception ex)
{
throw new Exception("Error " + ex.Message);
}
}
public List <Book> SearchBook(Book bookInfo)
{
try
{
BookDataContext bookData = new BookDataContext();
var result = from b in bookData.Books
where b.BookID.Equals(bookInfo.BookID)
orderby b.BookPrice descending
select b;
return(result.ToList());
}
catch (Exception ex)
{
throw new Exception("Error: " + ex.Message);
}
}
public List <Book> GetBookList()
{
BookDataContext bookData = new BookDataContext();
return(bookData.Books.ToList());
}
