public DataTable GetExistingdBookBL()
{
DataTable dt = new DataTable();
addBookDA studentDAOBj = new addBookDA();
dt = studentDAOBj.GetExistingBookFromDB();
return(dt);
}
public bool DeleteBookAndSendToBL(addBook addBookOBj)
{
if (addBookOBj.bID == 0 || addBookOBj.titel == "" || addBookOBj.cID == 0 || addBookOBj.isbn == "" || addBookOBj.publisher == "" || addBookOBj.edition == "" || addBookOBj.copies == 0)
{
return(false);
}
else
{
addBookDA addBookDAobj = new addBookDA();
bool result = addBookDAobj.DeleteBookFromDB(addBookOBj);
return(result);
}
}
