Action.cs
Brut
using System;
using System.Windows.Forms;
public class TestLambdaExpression
{
public static void Main()
{
Action<string> messageTarget;
if (Environment.GetCommandLineArgs().Length > 1)
messageTarget = s => ShowWindowsMessage(s);
else
messageTarget = s => Console.WriteLine(s);
messageTarget("Hello, World!");
}
private static void ShowWindowsMessage(string message)
{
MessageBox.Show(message);
}
}
| 1 | using System; |
| 2 | using System.Windows.Forms; |
| 3 | |
| 4 | public class TestLambdaExpression |
| 5 | { |
| 6 | public static void Main() |
| 7 | { |
| 8 | Action<string> messageTarget; |
| 9 | |
| 10 | if (Environment.GetCommandLineArgs().Length > 1) |
| 11 | messageTarget = s => ShowWindowsMessage(s); |
| 12 | else |
| 13 | messageTarget = s => Console.WriteLine(s); |
| 14 | |
| 15 | messageTarget("Hello, World!"); |
| 16 | } |
| 17 | |
| 18 | private static void ShowWindowsMessage(string message) |
| 19 | { |
| 20 | MessageBox.Show(message); |
| 21 | } |
| 22 | } |
| 1 | Func<string, string> convert = delegate(string s) |
| 2 | { |
| 3 | return s.ToUpper(); |
| 4 | }; |
| 5 | |
| 6 | string name = "Dakota"; |
| 7 | Console.WriteLine(convert(name)); |
| 8 | |
| 9 | // This code example produces the following output: |
| 10 | // |
| 11 | // DAKOTA |