Deleting objects from the Security database

The following code snippet illustrates how you can delete a particular role using its ID:

using (var context = new CustomDBContext())
            {
                var result = from r in context.Roles where r.RoleID == 2 select r;
                if (result.Count() > 0)
                {
                    Role role = result.First();
                    context.Roles.Remove(role);
                    context.SaveChanges();
                }
            }   

To delete bulk records, you can use a foreach loop as shown in the following code snippet:

using (var context = new CustomDBContext())
            {
                var result = from r in context.Roles where r.RoleID == 2 select r;

                if (result.Count() > 0)
                {
                    foreach(Role role in result)
                    {
                        context.Roles.Remove(role);
                        
                    }  
                   context.SaveChanges...