// user clicks return
private void btnReturn_Click(object sender, EventArgs e)
{
Book myBook = (Book)lstBooks.SelectedItem;
myBook.copies++;
BookFile.SaveBook(myBook, cwid, "edit");
LoadList();
}
// user clicks on save
private void btnSave_Click(object sender, EventArgs e)
{
myBook.title = txtTitleData.Text;
myBook.author = txtAuthorData.Text;
myBook.genre = txtGenreData.Text;
myBook.copies = int.Parse(txtCopiesData.Text);
myBook.length = int.Parse(txtLengthData.Text);
myBook.isbn = txtIsbnData.Text;
myBook.cover = txtCoverData.Text;
myBook.cwid = cwid;
BookFile.SaveBook(myBook, cwid, mode);
MessageBox.Show("Content was saved", "Saved", MessageBoxButtons.OK, MessageBoxIcon.Information);
this.Close();
}