public string SaveBook(Book book)
{
bool isMemberId = bookGateway.CheckBookName(book);
if (isMemberId == false)
{
int rowAffected = bookGateway.SaveBook(book);
if (rowAffected > 0)
{
return("Book submit Successfully.");
}
else
{
return("Book submit Failed, Try Again.");
}
}
else
{
return("This Name Already Used, please try Another Author Name");
}
}