public void Update(CardViewModel card)
        {
            try
            {
                using (var context = new CardHolderContext())
                {
                    var updateCard = context.Cards.Where(x => x.CardId == card.CardDetails.CardId).FirstOrDefault();
                    updateCard.CompanyName = card.CardDetails.CompanyName;
                    updateCard.CategoryId = card.CardDetails.CategoryId;
                    updateCard.JobTitle = card.CardDetails.JobTitle;
                    updateCard.OwnerName = card.CardDetails.OwnerName;
                    updateCard.Tagline = card.CardDetails.JobTitle;
                    updateCard.Website = card.CardDetails.Website;
                    context.SaveChanges();

                    var updateContact = context.ContactDetails.Where(x => x.CardId == card.CardDetails.CardId).FirstOrDefault();
                    updateContact.City = card.Contact.City ;
                    updateContact.Country = card.Contact.Country;
                    updateContact.Email = card.Contact.Email;
                    updateContact.FixNumber = card.Contact.FixNumber;
                    updateContact.MobileNumber = card.Contact.MobileNumber;
                    updateContact.Street = card.Contact.Street;
                    context.SaveChanges();

                    var deleteSocial = context.SocialMedia.Where(x => x.CardId == card.CardDetails.CardId).ToList();
                    context.SocialMedia.RemoveRange(deleteSocial);
                    context.SaveChanges();
                    
                    if (card.SocialMedia.Count > 0)
                    {
                        foreach (var item in card.SocialMedia)
                        {
                            item.CardId = card.CardDetails.CardId;
                            item.SocialId = 0;
                            context.SocialMedia.Add(item);
                        }
                    }
                    context.SaveChanges();
                }
            }
            catch (Exception ex)
            {
                throw new Exception(ex.Message);
            }
        }