Entity object cannot reference multiple instances of IEntityChangeTracker
I am using EF as ORM.
I use objectContext
for every request.
I am storing objects at the cache level since my service is receiving a lot of traffic.
I sometimes get an error objectContext already disposed
for some objects that I got from the cache.
I added this code to the items that were fetched from the cache
if (maMDBEntities.Entry(group).State == EntityState.Detached)
{
maMDBEntities.Groups.Attach(group);
}
but now I sometimes get this error:
An entity object cannot reference multiple instances of IEntityChangeTracker.
Attach()
Did you use the wrong solution from the first place?
source to share
As we told you in your other question ( will EF :: attach (entity) solve the objectContext problem? ), You need to detach the objects before attaching it to another Context!
If maMDBEntities
is a new Context (not the one that is loading the data), the EntityState is not tied to that context point. Therefore, your check is not enough.
This maMDBEntities.Entry(group).State == EntityState.Detached
will always be true for the Context that did not load the Entity.
source to share