public static List<Book> BooksListByAuthor(Author author)
{
using (var db = new BookshelfDbContext())
{
return db.Books
.Where(x => x.Author.Id == author.Id)
.OrderBy(x => x.Name)
.ToList();
}
}
public static Author AddAuthor(Author author)
{
if (author == null) return null;
using (var db = new BookshelfDbContext())
{
db.Authors.Add(author);
db.SaveChanges();
var id = db.Authors.Max(x => x.Id);
return db.Authors.Where(x => x.Id == id).FirstOrDefault();
}
}
private void AddAuthor(object sender)
{
var dlg = new AddValueWindow(AddNewAuthorLabelText);
if (dlg.ShowDialog() == false) return;
var value = dlg.GetValue();
if (value == null || value == string.Empty) return;
if (!AuthorList.Where(x => x.Name == value).Any())
{
var author = new Author();
author.Name = value;
using (var db = new BookshelfDbContext())
{
db.Authors.Add(author);
db.SaveChanges();
}
OnPropertyChanged("AuthorList");
}
var tAuthor = AuthorList.Where(x => x.Name == value).First();
if (tAuthor != null)
AuthorID = tAuthor.Id;
}