/// <summary>
/// Application main method
/// </summary>
/// <param name="args"></param>
public static void Main(string[] args)
{
Console.WriteLine("*** Delegates example ***");
InitCartWithDemoData();
// Use Delegate method
// Use Func method
// Use Action method
Console.WriteLine($"The total for the cart is: {_cart.GenerateTotal(SubTotalAlert, CalculateLeveledDiscount, AlertUser):C2}");
Console.WriteLine();
Console.WriteLine("=== Use anonymous methods ===");
// Use anonymous Delegate
// Use anonymous Func
// Use anonymous Action
decimal total = _cart.GenerateTotal(
(subTotal) => Console.WriteLine($"The subtotal for cart 2 is: {subTotal:C2}"),
(products, subTotal) =>
{
if (products.Count > 3)
{
return(subTotal * 0.5M);
}
return(subTotal);
},
(message) => Console.WriteLine($"Cart 2 alert: {message}")
);
Console.WriteLine($"The total for cart 2 is: {total:C2}");
Console.ReadKey();
}
/// <summary>
/// Message button click command
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void messageButton_Click(object sender, EventArgs e)
{
decimal total = _cart.GenerateTotal(ShowSubTotalAlert, CalculateLeveledDiscount, ShowDiscountAlert);
MessageBox.Show($"The total is {total:C2}");
}
