[HttpPost, ActionName("Delete")]
        [ValidateAntiForgeryToken]
        public async Task<ActionResult> DeleteConfirmed(int id)
        {
            Person person = await db.Persons.FindAsync(id);
            person.IsMark = 1;
            db.Entry(person).State = EntityState.Modified;
            await db.SaveChangesAsync();
            return RedirectToAction("Index");
        }

        public async Task<ActionResult> DeleteConfirmed(int id)
        {
            repo.DelPerson(id);
            return RedirectToAction("Index");
        }

        public async void DelPerson(int id)
        {
            Person person= await db.Persons.FindAsync(id);
            person.IsMark = 1;
            db.Entry(person).State = EntityState.Modified;            
            await db.SaveChangesAsync();
        }

        public async Task<int> DelPerson(int id)
        {
            Person person= await db.Persons.FindAsync(id);
            person.IsMark = 1;
            db.Entry(person).State = EntityState.Modified;            
            return await db.SaveChangesAsync();
        }