Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C# Entity Framework Basics CRUD Operations Updating Entities

olu adesina
olu adesina
23,007 Points
Posted by olu adesina
olu adesina
23,007 Points

Attach() in ENTITY FRAMEWORK

In the third example of this video which uses the attach method how does EF know which comic book its updating without using the find method first?

1 Answer

Steven Parker
Steven Parker
231,248 Points
Steven Parker
Steven Parker
231,248 Points

The value in the Id field (comicBook.Id) uniquely identifies which database record (which comic book) it is.