public virtual void Remove(params T[] items)
 {
     using (var context = new ExcurDbContext())
     {
         foreach (var item in items)
         {
             context.Entry(item).State = EntityState.Deleted;
         }
         context.SaveChanges();
     }
 }
 public virtual void Add(params T[] items)
 {
     using (var context = new ExcurDbContext())
     {
         foreach (var item in items)
         {
             // Maby use attach
             context.Entry(item).State = EntityState.Added;
         }
         context.SaveChanges();
     }
 }