public void Update(BOOK bookObj)
{
using (var db = new swagbaseEntities1())
{
BOOK dummyBook = db.BOOKs.Include("AUTHORs").FirstOrDefault(a => a.ISBN == bookObj.ISBN);
db.BOOKs.Attach(dummyBook);
db.CLASSIFICATIONs.Attach(db.CLASSIFICATIONs.Find(bookObj.SignId));
dummyBook.pages = bookObj.pages;
dummyBook.Title = bookObj.Title;
dummyBook.publicationinfo = bookObj.publicationinfo;
dummyBook.PublicationYear = bookObj.PublicationYear;
dummyBook.ISBN = bookObj.ISBN;
dummyBook.AUTHORs.Clear();
List <int> authorsToDummy = bookObj.AUTHORs.Select(a => a.Aid).ToList();
foreach (int auth in authorsToDummy)
{
db.AUTHORs.Attach(db.AUTHORs.Find(auth));
dummyBook.AUTHORs.Add(db.AUTHORs.Find(auth));
}
dummyBook.pages = bookObj.pages;
dummyBook.Title = bookObj.Title;
dummyBook.publicationinfo = bookObj.publicationinfo;
dummyBook.PublicationYear = bookObj.PublicationYear;
dummyBook.SignId = bookObj.SignId;
//dummyBook.CLASSIFICATION = bookObj.CLASSIFICATION;
db.SaveChanges();
}
}
public void Add(CLASSIFICATION classiObj)
{
using (var db = new swagbaseEntities1())
{
db.CLASSIFICATIONs.Add(classiObj);
db.SaveChanges();
}
}
public void Add(AUTHOR authorObj)
{
using (var db = new swagbaseEntities1())
{
db.AUTHORs.Add(authorObj);
db.SaveChanges();
}
}
public void Delete(CLASSIFICATION classiObj)
{
using (var db = new swagbaseEntities1())
{
CLASSIFICATION csignID = db.CLASSIFICATIONs.Find(classiObj.SignId);
db.CLASSIFICATIONs.Remove(csignID);
db.SaveChanges();
}
}
public void Update(CLASSIFICATION classiObj)
{
using (var db = new swagbaseEntities1())
{
db.CLASSIFICATIONs.Attach(classiObj);
db.Entry(classiObj).State = EntityState.Modified;
db.SaveChanges();
}
}
public void Delete(AUTHOR authorObj)
{
using (var db = new swagbaseEntities1())
{
AUTHOR athID = db.AUTHORs.Find(authorObj.Aid);
db.AUTHORs.Remove(athID);
db.SaveChanges();
}
}
public void Delete(BOOK bookObj)
{
using (var db = new swagbaseEntities1())
{
BOOK bISBN = db.BOOKs.Find(bookObj.ISBN);
db.BOOKs.Remove(bISBN);
db.SaveChanges();
}
}
public void Update(AUTHOR authorObj)
{
using (var db = new swagbaseEntities1())
{
AUTHOR dummyAuthor = db.AUTHORs.Include("BOOKs").FirstOrDefault(a => a.Aid == authorObj.Aid);
db.AUTHORs.Attach(dummyAuthor);
dummyAuthor.BirthYear = authorObj.BirthYear;
dummyAuthor.FirstName = authorObj.FirstName;
dummyAuthor.LastName = authorObj.LastName;
//dummyAuthor.BOOKs.Clear();
//AUTHOR booksToDummy = authorObj.BOOKs.Select
db.Entry(dummyAuthor).State = EntityState.Modified;
db.SaveChanges();
}
}
public void Add(BOOK bookObj)
{
using (var db = new swagbaseEntities1())
{
List <AUTHOR> auths = bookObj.AUTHORs.ToList();
bookObj.AUTHORs = null;
bookObj.CLASSIFICATION = null;
db.BOOKs.Add(bookObj);
foreach (AUTHOR a in auths)
{
db.AUTHORs.Attach(a);
a.BOOKs.Add(bookObj);
db.Entry(a).State = EntityState.Modified;
}
db.SaveChanges();
}
}