EF Generic Repository get Id from new inserted generic entity

Question

All my entities has property Id. All my tables in database has auto-generated integer identity Id as primary key.

I have generic method to Create entities.

I

Answer 1

The solution:

 public override TR Create(T entity)
    {
        string entitySet = GetEntitySetName();
        _context.AddObject(entitySet, entity);
        _context.SaveChanges();

        //Returns primaryKey value
        return (TR)context.CreateEntityKey(entitySet, entity).EntityKeyValues[0].Value;                       
    }

Where T: entity type, TR: entity PK type.