protected void HandlerSearchBooks(object sender, EventArgs e)
{
var books = new BookCollection();
var isbn = txtIsbn.Text;
var title = txtTitle.Text;
var author = txtAuthor.Text;
var publisher = txtPublisher.Text;
var year = txtYear.Text;
var genre = ddlGenre.SelectedValue;
books.FilterBooksByAll(isbn, title, author, publisher, year, genre);
rptBookDisplay.DataSource = books.BookList;
rptBookDisplay.DataBind();
}
