public delegate void myDelegate(string str);
public static void HellowChinese(string strChinese)
{
　　Console.WriteLine("Good morning," + strChinese);
　　Console.ReadLine();
}
myDelegate d = new myDelegate(HellowChinese);
d("Mr wang");

public static void HellowChinese(string strChinese)
{
Console.WriteLine("Good morning," + strChinese);
Console.ReadLine();
}

Action<string> action = HellowChinese;
action("Spring.");

public static string HelloEnglish(string strEnglish)
{
return "Hello." + strEnglish;
}

Func<string, string> f = HelloEnglish;
Console.WriteLine(f("Srping ji"));
Console.ReadLine();