protected void Clear_Click(object sender, EventArgs e)
{
ISBN.Text = "";
Name.Text = "";
PurchaseCost.Text = "";
SellingPrice.Text = "";
Message.Text = "Cleared!";
BookListDisplay.DataSource = null;
BookListDisplay.DataBind();
}
protected void Add_Click(object sender, EventArgs e)
{
string isbn = ISBN.Text;
string name = Name.Text;
double cost = double.Parse(PurchaseCost.Text);
double price = double.Parse(SellingPrice.Text);
//if(bookInfo.Contains(isbn))
//{
// Message.Text = "This book is already registered! Please pick a different ISBN.";
//}
//else
//{
bookInfo.Add(new Books(isbn, name, cost, price));
Message.Text = "Your book has been registered!";
//}
BookListDisplay.DataSource = bookInfo;
BookListDisplay.DataBind();
}