委托创建小记
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using System;
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using System.Collections.Generic;
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using System.Text;
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namespace MyDelegates
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{
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class Program
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{
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static void Main(string[] args)
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{
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Test.main();
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Console.WriteLine();
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Test2.main();
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Console.Read();
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}
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}
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public delegate int PrintMessageHandler(string message);
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public class Test
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{
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static int Print(string msg)
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{
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Console.WriteLine(msg);
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return msg.Length;
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}
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static void PrintTitle(PrintMessageHandler prn)
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{
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prn("=======================");
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prn(" XYZ Bank ");
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prn("=======================");
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}
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public static void main()
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{
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PrintMessageHandler prn = new PrintMessageHandler(Print);
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string s = " 直接使用委托实例 ";
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int n = prn(s);
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PrintTitle(prn);
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}
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}
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public delegate int printmessagehandler(string message);
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public class PrintProvider
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{
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public int Print(string msg)
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{
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Console.WriteLine(msg);
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return msg.Length;
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}
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}
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public class PrintConsumer
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{
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public void PrintTitle(printmessagehandler prn)
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{
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prn("====================");
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prn(" XYZ Bank1 ");
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prn("====================");
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}
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}
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public class Test2
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{
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public static void main()
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{
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PrintProvider pp = new PrintProvider();
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printmessagehandler prn = new printmessagehandler(pp.Print);
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string s = "直接使用委托实例";
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int n = prn(s);
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PrintConsumer pc = new PrintConsumer();
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pc.PrintTitle(prn);
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}
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}
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}
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