public ClassBog(int inId, ClassISBN inISBN, ClassTitle inTitle, ClassAuthor inAuthor, ClassPublisher inPublisher,
ClassGenre inGenre, ClassType inType, Classudlaan inRentDate, decimal inPris)
{
id = inId;
isbnNr = inISBN;
titel = inTitle;
forfatter = inAuthor;
forlag = inPublisher;
genre = inGenre;
type = inType;
rentdate = inRentDate;
pris = inPris;
}