private async void UpdateCanBookBeAddedToWishList(Book selectedBook)
{
if (m_currentBookId.HasValue)
{
try
{
var isBookInWishList = await m_wishListRepository.IsInWishListAsync(selectedBook.Id);
var isBookPurchased = await m_purchaseService.IsPurchasedAsync(selectedBook);
m_canAddToWishList = !isBookInWishList && !isBookPurchased;
}
catch (Exception ex)
{
m_canAddToWishList = false;
m_messaging.Send(this, ex);
}
}
else
{
m_canAddToWishList = false;
}
ChangeCanCommandExecute(AddWishList);
}