public Boolean addRenting(Renting renting) { var db = new MaintainDb(); rentings.Add(renting); db.insertSingleObject(renting); return(true); }
public Boolean addLibrarian(Librarian librarian) { var db = new MaintainDb(); foreach (var l in librarians) { if (l.firstName == librarian.firstName && l.lastName == librarian.lastName) { return(false); } } librarians.Add(librarian); db.insertSingleObject(librarian); return(true); }
public Boolean addBook(Book book) { var db = new MaintainDb(); foreach (var b in books) { if (b.id == book.id) { ; } } books.Add(book); db.insertSingleObject(book); return(true); }
public Boolean addAuthor(Author author) { var db = new MaintainDb(); if (authors.Count > 0) { foreach (var a in authors) { if (a.firstName == author.firstName && a.lastName == author.lastName) { return(false); } } } authors.Add(author); db.insertSingleObject(author); return(true); }