private void ExecuteAddContactCommand()
 {
     CreateEditContactInteractionRequest.Raise(
         new CreateEditContactNotification(_contactService)
     {
         Title = "Add Contact"
     },
         (data) =>
     {
         if (data.Confirmed)
         {
             // refresh event
         }
     });
 }
        private void ExecuteEditContactCommand()
        {
            if (SelectedContactIndex < 0)
            {
                return;
            }

            CreateEditContactInteractionRequest.Raise(
                new CreateEditContactNotification(_contactService, Contacts[SelectedContactIndex])
            {
                Title = "Edit Contact"
            },
                (data) =>
            {
                if (data.Confirmed)
                {
                    // refresh event
                    Load();
                }
            });
        }