Attach & AttachRange
Description
To improve the performance, you can now use AttachRange when attaching multiple entities. The performance gain is similar to Add vs AddRange (DetectChanges is called only once in AddRange and AttachRange).
To improve the flexibility, we added an over that let you attach an entity by specifing the EntityState.
Attach
Example
context.Customers.Attach(customer, EntityState.Deleted);
AttachRange
Example
context.Customers.AttachRange(customers, EntityState.Deleted);