/*
* Given a book ISBN(entered by the user) and a book record(read from
* the currentBookFile) checks to see if the user ISBN matches the record
* ISBN(the first field of the record_. If there is a match, this method splits
* the record into its 6 component parts and saves them
*/
public Boolean findAndSaveBook(String ISBN)
{
string nextRecord;
Boolean isEndOfFile = true;
Boolean success;
nextRecord = currentBookFile.getNextRecord(ref isEndOfFile);
while (!isEndOfFile)
{
Book tempBook = new Book();
success = tempBook.populateBookObject(nextRecord);
if (success != true)
{
MessageBox.Show
("Unable to create a Book Object",
"Book object creation Failed", MessageBoxButtons.OK, MessageBoxIcon.Stop);
return(false);
}
if (tempBook.bookMatch(ISBN, tempBook))
{
book = tempBook;
return(true);
}
nextRecord = BookStore.currentBookFile.getNextRecord(ref isEndOfFile);
} //end While
return(false);
}
/*
* Checks for a duplicate record when user attempts to add new book
*/
public Boolean checkForDuplicateRecord(String ISBN, String Author, DateTime date, String Title, Decimal Price, int onHand)
{
String line = ISBN + " * " + Title + " * " + Author + " * " +
Price + " * " + onHand + " * " + date.ToString();
Book addBook = new Book();
String tempISBN = ISBN = ISBN.Replace("-", "");
if (!findAndSaveBook(ISBN))
{
addBook.populateBookObject(line);
addBook.displayBookRecord();
writeOneRecord(addBook);
return(false);
}
return(true);
}
