Welcome to the Treehouse Community
The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)
Looking to learn something new?
Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

Robert Patterson
2,915 Pointsusing the 'Attach' method keeps throwing error: System.InvalidOperationException HResult = 0x80131509
public static void UpdateComicBook(ComicBook comicBook) { using (var context = GetContext()) { ComicBook comicBookToUpdate = context.ComicBooks.Find(comicBook.Id); // Trying to update the database using the 'Attach' method and setting the // 'EntityState' to modified keeps throwing an error: //===================================================== context.ComicBooks.Attach(comicBook); var comicBookEntry = context.Entry(comicBook); comicBookEntry.State = EntityState.Modified; //comicBookEntry.Property("IssueNumber").IsModified = false;
context.SaveChanges();
}
}