// Invoke the Purchase event
public virtual void OnPurchase(PurchaseEventArgs e)
{
if (Purchase != null)
{
Purchase(this, e);
}
}
public override void PurchaseHandler(object sender, PurchaseEventArgs e)
{
if (e.Purchase.Amount < 10000.0)
{
Console.WriteLine("{0} approved request# {1}",
this.GetType().Name, e.Purchase.Number);
}
else if (Successor != null)
{
Successor.PurchaseHandler(this, e);
}
}
// Purchase event handler public abstract void PurchaseHandler(object sender, PurchaseEventArgs e);
// Purchase event handler public abstract void PurchaseHandler(object sender, PurchaseEventArgs e);
public void ProcessRequest(Purchase purchase)
{
PurchaseEventArgs e = new PurchaseEventArgs { Purchase = purchase };
OnPurchase(e);
}