private void BtnCheckOut_Click(object sender, EventArgs e)
{
if (lstSelectBook.SelectedIndex != -1)
{
var selectedItems = lstSelectBook.SelectedItems;
List <Book> uncheckedBooks =
LibraryHelper.GetAllUncheckedBooks();
List <Book> selectedBooks = GetSelectedItems(
selectedItems);
if (LibraryHelper.CheckoutBooks(selectedBooks))
{
MessageBox.Show("Check-Out Successful.");
LoadBoxes();
}
else
{
MessageBox.Show("Check-Out Unsuccessful.");
}
}
else
{
MessageBox.Show("Nothing selected.");
}
}
/// <summary>
/// Clears form and loads list boxes with data.
/// </summary>
private void LoadBoxes()
{
lstCheckedOut.Items.Clear();
List <Book> checkedBooks =
LibraryHelper.GetMemberBooks();
if (checkedBooks != null)
{
foreach (Book b in checkedBooks)
{
lstCheckedOut.Items.Add($"{b.ISBN}, " +
$"{b.Title}, " +
$"{b.Author}, " +
$"{b.PubDate}, " +
$"{b.Category}");
}
}
cboBooksAvailable.Items.Clear();
List <Book> uncheckedBooks =
LibraryHelper.GetAllUncheckedBooks();
if (uncheckedBooks != null)
{
foreach (Book b in uncheckedBooks)
{
cboBooksAvailable.Items.Add($"{b.ISBN}, " +
$"{b.Title}, " +
$"{b.Author}, " +
$"{b.PubDate}, " +
$"{b.Category}");
}
}
lstSelectBook.Items.Clear();
}