public void OpenWindowAuthorMethod()
{
if (CheckAuthor())
{
if (BookOfAuthor.Count != 0)
{
BookOfAuthor.Clear();
}
using (Model1 context = new Model1())
{
ObservableCollection <Book> Books = context.Authors.Where(c => (c.SecondName == SelectedAuthor.SecondName) & (c.FatherName == SelectedAuthor.FatherName) & (c.FirstName == SelectedAuthor.FirstName)).Select(c => c.Books).FirstOrDefault();
foreach (Book b in Books)
{
BookOfAuthor.Add(b.BookName);
}
}
NewAuthor = SelectedAuthor;
BookName = null;
WindowAuthors WindowNew = new WindowAuthors();
WindowNew.ShowDialog();
}
else
{
MessageBox.Show("Автор не найден");
}
}
public void AddBookToAuthorMethod()
{
BookOfAuthor.Add(BookName);
if (CheckBook() == false)
{
AddBookMethod();
}
Add(BookName, NewAuthor);
}