CODEWITHSUNDEEP
c#-4.0entity-framework-4
user2851409
user2851409

Reputation:

Error when i delete multiple rows "The object cannot be deleted because it was not found in the ObjectStateManager."

Hey Everyone i am using this code to remove multiple records in table. but it's give me an error.

"The object cannot be deleted because it was not found in the ObjectStateManager"

I am new in EF please help me what's wrong in my code.

listOfEntities = list of record which i want to delete from table
U = it is a type entity

using (var db = new DMContext())
{
  db.SaveChanges();
}

Upvotes: 0

Views: 105

Answers (1)

Rahul Tripathi
Rahul Tripathi

Reputation: 172428

It means that the entity is not attached. You can try like this

using (var db = new DMContext())
{
    db.YourTableEntity.Attach(EntityToRemove); 
    db.YourTableEntity.Remove(EntityToRemove);
    db.SaveChanges();
}

You cannot remove the entities which are detached, so you need to first attach them and then you can remove it.

To remove multiple records

foreach (var entity in entities)
{
    Set<T>().Attach(entity);
    Set<T>().Remove(entity);
}

SaveChanges();

Upvotes: 1

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