internal static BookInfo UpdateBook(BookInfo bk)
{
// Discounts the price of all
// computer books by 20 percent.
string paramId = bk.Id;
string paramAuthor = bk.Author;
string paramTitle = bk.Title;
string paramGenre = bk.Genre;
string paramPrice = bk.Price;
if (paramGenre.ToLower() == "computer")
{
double oldprice = Convert.ToDouble(paramPrice);
double newprice = oldprice - oldprice * .20;
paramPrice = newprice.ToString();
if (paramPrice.IndexOf(".") == paramPrice.Length - 4)
{
paramPrice = paramPrice.Substring(1, paramPrice.Length - 1);
}
Console.WriteLine("{0} - Old Price: {1}, New Price: {2}", paramTitle, oldprice, paramPrice);
}
string paramPublishDate = bk.PublishDate;
string paramDescription = bk.Description;
BookInfo bookUpdated = new MyBookInfo(paramId, paramAuthor, paramTitle, paramGenre,
paramPrice, paramPublishDate, paramDescription);
return(bookUpdated);
}
// Populate a BookInfo object with data
// about the best selling book.
public override BookInfo GetBestSeller()
{
var paramId = "bk999";
var paramAuthor = "Corets, Eva";
var paramTitle = "Cooking with Oberon";
var paramGenre = "Cooking";
var paramPrice = "7.95";
var paramPublishDate = "2006-12-01";
var paramDescription = "Recipes for a post-apocalyptic society.";
var bestBook = new MyBookInfo(paramId, paramAuthor, paramTitle, paramGenre,
paramPrice, paramPublishDate, paramDescription);
return(bestBook);
}
