protected void btnCondition_Click(object sender, EventArgs e)
{
int bookNumber;
try
{
bookNumber = int.Parse(txtBookNumber.Text);
}
catch
{
lblError.Text = "Borrower number must be a integer!";
txtBorrowerNumber.Focus();
return;
}
Book b = BookDAO.GetBook(bookNumber);
if (b == null)
{
lblError.Text = String.Format("Booknumber {0} does't exist!", bookNumber);
txtBorrowerNumber.Focus();
return;
}
if (CopyDAO.GetCopyByBookNumber(bookNumber) == null)
{
displayButtons(3);
txtTitle.Text = b.Title;
}
else
{
displayButtons(2);
}
}
