Entity framework 4, update specific properties

Question

I use the code first where I can:

db.Users.Attach(user); db.Entry(user).Property(propertyName).IsModified = true; 

How to do this using the DataModel method?

I don't have an Entry method in my datacontext.

Answer 1

Using:

 context.Users.Attach(user); ObjectStateEntry entry = context.ObjectStateManager.GetObjectStateEntry(user); entry.SetModifiedProperty(propertyName);