delegatereturnvalue.cs

vc的原码例子12 vc的原码例子12

using System;

class clsComposeDelegate
{
	public delegate int ShowMessage(string Message);
	public static ShowMessage DelegateHolder = null;

	public static void Main ()
	{
        int result;

		DelegateHolder += new ShowMessage(UpperMessage);
		result = DelegateHolder("AAAAA");
        Console.WriteLine("Result: {0}", result);
   
		DelegateHolder += new ShowMessage(LowerMessage);
		result = DelegateHolder("BBB");
		Console.WriteLine("Result: {0}", result);
	}

	private static int UpperMessage(string Message)
	{
		Console.WriteLine(Message.ToUpper());
		return(1);
	}

	private static int LowerMessage(string Message)
	{
		Console.WriteLine(Message.ToLower());
		return(2);
	}
}