[C#學習雜記] CSDN上看到的一個題目

來源:互聯網
上載者:User

對於委託中的隱藏方法有些迷惑,請高手給與說明
下面是三段代碼,請問CODE1 、CODE2 和 CODE3的區別,最好給予詳細說明。

 

CODE1:

using System;namespace ConsoleApplication1 {class Program {    delegate string delegateTest (string val);    static void Main (string[] args){        string mid = ",middle part,";                        delegateTest anonDel = delegate (string param){            param += mid;            param += "and this is added to the string.";            return param;            };                                        Console.WriteLine (anonDel( "Start of string" ) );        }    }}

CODE2:

 

using System;namespace ConsoleApplication1 {class Program {    delegate string delegateTest (string val);    static string mid = ",middle part,";    static void Main (string[] args){                delegateTest anonDel = new delegateTest (DelMethod);                                Console.WriteLine (anonDel( "Start of string" ) );        }    static string DelMethod(string param){            param += mid;            param += "and this is added to the string.";            return param;            }    }}

 

CODE3:

using System;namespace ConsoleApplication1 {class Program {    delegate string delegateTest (string val);    static void Main (string[] args){        string mid = ",middle part,";                        delegateTest anonDel = new delegateTest (delegate (string param){            param += mid;            param += "and this is added to the string.";            return param;            });                        Console.WriteLine (anonDel( "Start of string" ) );        }    }}

 

 

剛好學了委託,我來回答下O(∩_∩)O哈哈~

 

CODE1 和CODE3應該都是匿名委託,CODE2是標準委託形式。 CODE1和CODE3隻是寫法上的問題。

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