public void Create(CardViewModel card)
        {
            try
            {
                using (var context = new CardHolderContext())
                {
                    context.Cards.Add(card.CardDetails);
                    context.SaveChanges();

                    card.Contact.CardId = card.CardDetails.CardId;
                    context.ContactDetails.Add(card.Contact);

                    if (card.SocialMedia.Count > 0)
                    {
                        foreach (var item in card.SocialMedia)
                        {
                            item.CardId = card.CardDetails.CardId;
                        }
                    }

                    context.SocialMedia.AddRange(card.SocialMedia);
                    context.SaveChanges();

                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }