From 657a23e681dda5743222cfb7c8cc2971e6a5e1e2 Mon Sep 17 00:00:00 2001 From: Kister Hakusan <2753888203@qq.com> Date: Fri, 17 Oct 2025 10:27:36 +0800 Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0Lesson12?= MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit --- C#进阶/C#进阶.sln | 12 ++ C#进阶/Lesson12_委托/Lesson12_委托.csproj | 10 + C#进阶/Lesson12_委托/Program.cs | 178 ++++++++++++++++++ .../Lesson12_委托练习/Lesson12_委托练习.csproj | 10 + C#进阶/Lesson12_委托练习/Program.cs | 117 ++++++++++++ 5 files changed, 327 insertions(+) create mode 100644 C#进阶/Lesson12_委托/Lesson12_委托.csproj create mode 100644 C#进阶/Lesson12_委托/Program.cs create mode 100644 C#进阶/Lesson12_委托练习/Lesson12_委托练习.csproj create mode 100644 C#进阶/Lesson12_委托练习/Program.cs diff --git a/C#进阶/C#进阶.sln b/C#进阶/C#进阶.sln index 61b8818..00e563e 100644 --- a/C#进阶/C#进阶.sln +++ b/C#进阶/C#进阶.sln @@ -49,6 +49,10 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson11_泛型栈和队列 EndProject Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson11_泛型栈和队列练习", "Lesson11_泛型栈和队列练习\Lesson11_泛型栈和队列练习.csproj", "{C91DDD1F-E702-430F-95FA-22BBEDE5E011}" EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson12_委托", "Lesson12_委托\Lesson12_委托.csproj", "{43FC89B7-F926-4036-93E7-C88746BC49F0}" +EndProject +Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Lesson12_委托练习", "Lesson12_委托练习\Lesson12_委托练习.csproj", "{A5EDC63B-0ACF-48FF-BABC-8C4D1B0E12D9}" +EndProject Global GlobalSection(SolutionConfigurationPlatforms) = preSolution Debug|Any CPU = Debug|Any CPU @@ -147,6 +151,14 @@ Global {C91DDD1F-E702-430F-95FA-22BBEDE5E011}.Debug|Any CPU.Build.0 = Debug|Any CPU {C91DDD1F-E702-430F-95FA-22BBEDE5E011}.Release|Any CPU.ActiveCfg = Release|Any CPU {C91DDD1F-E702-430F-95FA-22BBEDE5E011}.Release|Any CPU.Build.0 = Release|Any CPU + {43FC89B7-F926-4036-93E7-C88746BC49F0}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {43FC89B7-F926-4036-93E7-C88746BC49F0}.Debug|Any CPU.Build.0 = Debug|Any CPU + {43FC89B7-F926-4036-93E7-C88746BC49F0}.Release|Any CPU.ActiveCfg = Release|Any CPU + {43FC89B7-F926-4036-93E7-C88746BC49F0}.Release|Any CPU.Build.0 = Release|Any CPU + {A5EDC63B-0ACF-48FF-BABC-8C4D1B0E12D9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU + {A5EDC63B-0ACF-48FF-BABC-8C4D1B0E12D9}.Debug|Any CPU.Build.0 = Debug|Any CPU + {A5EDC63B-0ACF-48FF-BABC-8C4D1B0E12D9}.Release|Any CPU.ActiveCfg = Release|Any CPU + {A5EDC63B-0ACF-48FF-BABC-8C4D1B0E12D9}.Release|Any CPU.Build.0 = Release|Any CPU EndGlobalSection GlobalSection(SolutionProperties) = preSolution HideSolutionNode = FALSE diff --git a/C#进阶/Lesson12_委托/Lesson12_委托.csproj b/C#进阶/Lesson12_委托/Lesson12_委托.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson12_委托/Lesson12_委托.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson12_委托/Program.cs b/C#进阶/Lesson12_委托/Program.cs new file mode 100644 index 0000000..e626d8a --- /dev/null +++ b/C#进阶/Lesson12_委托/Program.cs @@ -0,0 +1,178 @@ +namespace Lesson12_委托 +{ + #region 知识点一 委托是什么 + //委托是函数的容器 + //可以理解为表示函数（方法）的变量类型 + //用来 存储、传递函数 + //委托的本质是一个类，用来定义函数（方法）的类型（返回值和参数的类型） + //不同的 函数必须对应和自己格式一致的委托 + #endregion + + #region 知识点二 基本语法 + //关键字：delegate + //语法：访问修饰符 delegate 返回值 委托名（参数列表）； + + //写在哪里？ + //可以在namespace的class语句种 + //更多写在namespace种 + + //简单记忆委托语法就是 函数声明语法前加一个delegate关键字 + #endregion + + #region 知识点三 定义自定义委托 + //访问修饰符不写 默认为public在别的命名空间中也能使用 + //private其他命名空间就用不了了 + //但一般使用public + + delegate void MyFun(); + + delegate int MyFun2(int a); + #endregion + + #region 知识点四 使用定义好的委托 + //委托变量是函数的容器 + + //委托常用在： + //1.作为类的成员 + //2.作为函数的参数 + class Test + { + public MyFun fun; + public MyFun2 fun2; + + public void TestFun(MyFun f, MyFun2 f2) + { + //一般是先处理一些别的逻辑 当这些逻辑处理完毕后 再调用传递进来的函数 + + f(); + Console.WriteLine(f2(123)); + this.fun = f; + this.fun2 = f2; + } + + public void AddFun(MyFun fun,MyFun2 fun2) + { + this.fun += fun; + this.fun2 += fun2; + } + + public void RemoveFun(MyFun fun, MyFun2 fun2) + { + this.fun -= fun; + this.fun2 -= fun2; + } + } + #endregion + + #region 知识点五 委托变量可以存储多个函数 + //上方的例子已经演示 + #endregion + + + class Program + { + static void Main(string[] args) + { + Console.WriteLine("委托"); + + MyFun f = new MyFun(Fun); + Console.WriteLine("别的逻辑操作"); + f.Invoke();//调用委托变量存储的函数 + + MyFun f2 = Fun;//简写 + Console.WriteLine("别的逻辑操作"); + f2(); + + //MyFun f2 = Fun2;//格式错误 不同格式的函数不能存储到同一个委托变量中 + MyFun2 f21 = Fun2; + Console.WriteLine(f21(123)); + + MyFun2 f22 = new MyFun2(Fun2); + Console.WriteLine(f22.Invoke(123)); + + Test t = new Test(); + t.TestFun(Fun, Fun2); + + + Console.WriteLine("____________________"); + //如何用委托存储多个函数 + MyFun ff = Fun; + ff += Fun3;//多加了Fun3，所以会调用两个函数 + ff(); + //完全写法是 + ff = ff + Fun; + + Console.WriteLine("____________________"); + t.AddFun(Fun, Fun2); + t.fun(); + t.fun2(123); + + Console.WriteLine("____________________"); + ff = null; + ff += Fun; + ff += Fun3; + ff(); + Console.WriteLine("执行删除后："); + ff -= Fun; + ff(); + ff -= Fun;//多删不会报错但也无效 + + + #region 知识点六 系统定义好的委托 + Console.WriteLine("____________________"); + //Action 没有返回值的委托，需要引用的命名空间 System + Action a = Fun; + //之前的操作也可以用 + a += Fun3; + a(); + + Console.WriteLine("____________________"); + //Func<> 有返回值的委托，最后一个类型参数是返回值类型，前面的类型参数是参数类型 + Func funcString = Fun4; + //Func funcInt = xxxx; + + //可以传n个参数的 系统提供了 1到16个参数的Func<> 直接使用 + Action a2 = Fun6; + + //Action用来存储没有返回值的函数 + //Func用来存储有返回值的函数 + //两个委托都可以以泛型方式同时存储多个函数 + #endregion + } + + + + + + + + + + static void Fun() + { + Console.WriteLine("这是Fun（）函数"); + } + static void Fun3() + { + Console.WriteLine("这是Fun3（）函数"); + } + static string Fun4() + { + return ""; + } + static void Fun6(int i,string s) + { + + } + static int Fun2(int a) + { + return a; + } + } +} +//总结 +//委托是函数的容器 +//可以用 委托变量 来存储、传递函数 +//系统提供了 Action 和 Func 两个通用委托 +//Action:没有返回值 参数数量0~16个 +//Func:有返回值 参数数量0~16个（最后一个类型参数是返回值类型） diff --git a/C#进阶/Lesson12_委托练习/Lesson12_委托练习.csproj b/C#进阶/Lesson12_委托练习/Lesson12_委托练习.csproj new file mode 100644 index 0000000..2150e37 --- /dev/null +++ b/C#进阶/Lesson12_委托练习/Lesson12_委托练习.csproj @@ -0,0 +1,10 @@ + + + + Exe + net8.0 + enable + enable + + + diff --git a/C#进阶/Lesson12_委托练习/Program.cs b/C#进阶/Lesson12_委托练习/Program.cs new file mode 100644 index 0000000..33f28ed --- /dev/null +++ b/C#进阶/Lesson12_委托练习/Program.cs @@ -0,0 +1,117 @@ +namespace Lesson12_委托练习 +{ + #region 第一题 + abstract class Person() + { + public abstract void Eating(); + } + + class Mother : Person + { + public Action beginEat; + + public void Cooking() + { + Console.WriteLine("妈妈做饭"); + if (beginEat != null) + { + beginEat(); + } + } + public override void Eating() + { + Console.WriteLine("妈妈吃饭"); + + } + } + class Father : Person + { + public override void Eating() + { + Console.WriteLine("爸爸吃饭"); + } + } + class Son : Person + { + public override void Eating() + { + Console.WriteLine("孩子吃饭"); + } + } + #endregion + class Monster + { + //当怪物死亡时，把自己作为参数传出去 + public Action deadDoSomething; + public int money = 10; + public void Dead() + { + Console.WriteLine("怪物死亡"); + if (deadDoSomething != null) + { + deadDoSomething(this); + } + + deadDoSomething = null;//清空所需要做的事情（在这里就是怪物的击杀奖励已经领取了不要重复刷 + //一般有加就有减 + } + } + class Player + { + private int money = 0; + public void MonsterDeadDoSomething(Monster m) + { + this.money += m.money; + Console.WriteLine("玩家获得了" + m.money + "金币"); + } + } + class Panel + { + private int showNowMoney = 0; + public void MonsterDeadDoSomething(Monster m) + { + this.showNowMoney += m.money; + Console.WriteLine("面板显示当前金币" + showNowMoney); + } + } + class Achievement + { + private int nowKillMonsterNum = 0; + public void MonsterDeadDoSomething(Monster m) + { + nowKillMonsterNum += 1; + Console.WriteLine("当前击杀了" + nowKillMonsterNum + "个怪物"); + } + } + class Program + { + static void Main(string[] args) + { + Console.WriteLine("Hello, World!"); + #region 第一题 + Mother mother = new Mother(); + Father father = new Father(); + Son son = new Son(); + + mother.beginEat += father.Eating; + mother.beginEat += son.Eating; + mother.beginEat += mother.Eating; + + mother.Cooking(); + Console.WriteLine("_______________________"); + #endregion + + Monster m = new Monster(); + Player p = new Player(); + Panel panel = new Panel(); + Achievement achievement = new Achievement(); + + m.deadDoSomething += p.MonsterDeadDoSomething; + m.deadDoSomething += panel.MonsterDeadDoSomething; + m.deadDoSomething += achievement.MonsterDeadDoSomething; + m.Dead(); + m.Dead(); + } + + } +}