public void Show()
{
Student student = new Student();
//student.SayHi("狗子", Student.Country.Chinese);
//student.SayHi("宫本", Student.Country.Japanese);
//student.SayHi("宋钟基", Student.Country.Korea);
//student.SayHi("bbbb", Student.Country.Australian);
//student.SayHiChinese("狗子");
//student.SayHiJapanese("宫本");
//student.SayHiKorea("宋钟基");
//student.SayHiAustralian("bbbb");
SayHiDelegate sayHiChinese = new SayHiDelegate(student.SayHiChinese);
sayHiChinese("狗子");
SayHiDelegate sayHiJapanese = new SayHiDelegate(student.SayHiJapanese);
sayHiJapanese("宫本");
SayHiDelegate sayHiKorea = new SayHiDelegate(student.SayHiKorea);
sayHiKorea("宋钟基");
SayHiDelegate sayHiAustralian = new SayHiDelegate(student.SayHiAustralian);
sayHiAustralian("bbbb");
}
//1 加参数判断---执行分支逻辑
//2 加方法满足不同的场景 如果方法特别复杂，就推荐这个
/// <summary>
/// 既增加公共逻辑方便，又逻辑分离维护简单 鱼肉熊掌怎么兼得？
/// 自上往下---逻辑解耦，方便维护升级
///
/// 自下往上---代码重用，去掉重复代码
/// </summary>
public void SayHiPerfact(string name, SayHiDelegate method)
{
//Action<string,int>
//Func<string>
Console.WriteLine("prepare SayHi..");
method.Invoke(name);
}
static void Main(string[] args)
{
SayHiDelegate sayHi = null;
sayHi = new SayHiDelegate(SayHiEnglish);
sayHi += new SayHiDelegate(SayHiSpanish);
sayHi += new SayHiDelegate(SayHiFrench);
sayHi();
}
static void Main(string[] args)
{
SayHiDelegate sayHi = null;
sayHi = new SayHiDelegate(SayHiEnglish);
sayHi += new SayHiDelegate(SayHiSpanish);
sayHi += new SayHiDelegate(SayHiJapanese);
sayHi += new SayHiDelegate(SayHiItalian);
sayHi += new SayHiDelegate(SayHiGerman);
sayHi += new SayHiDelegate(SayHiArabic);
sayHi();
}
static void Main(string[] args)
{
SayHiDelegate sayHi = null;
sayHi = new SayHiDelegate(SayHiDanish);
sayHi += new SayHiDelegate(SayHiGerman);
sayHi += new SayHiDelegate(SayHiEnglish);
sayHi += new SayHiDelegate(SayHiSpanish);
sayHi();
Console.ReadKey();
}
static void Main(string[] args)
{
Console.WriteLine("Hello World!");
DeleageDemoMyDelegate delegateDemo = new DeleageDemoMyDelegate();
{
SayHiDelegate method = new SayHiDelegate(delegateDemo.SayHiChinese);
method += delegateDemo.SayHiEnglish;
delegateDemo.SayHiShow("wwmin", method);
}
Action action1 = new Action(() => Console.WriteLine("www"));
action1.Invoke();
Func <string> func1 = new Func <string>(() => "wwmin");
func1 += () => "liyue";
Console.WriteLine(func1.Invoke());
Console.ReadKey();
}
public void SayHiShow(string name, SayHiDelegate method)
{
Console.WriteLine("需要先举手");
method.Invoke(name);
}
/// <summary>
/// 方法三、使用委托
/// </summary>
public void SayHiSenior(string name, SayHiDelegate sayHi)
{
Console.WriteLine("start loging");
sayHi.Invoke(name);
Console.WriteLine("end loging");
}
// public void SayHi()
// {
// SayHiPerfact(" 王大师", this.China);
// }
public void SayHiPerfact(string name, SayHiDelegate method)
{
Console.WriteLine("我是通用方法");
method.Invoke(name);
}
static void Main(string[] args)
{
PlayerInfoDel ronaldinho = new PlayerInfoDel(DisplayInformation);
ronaldinho();
PlayerInfoWithNameDel playerName = new PlayerInfoWithNameDel(DisplayInformation);
playerName("Messi");
PlayerInfoNameWithGoalsDel newPlayer = new PlayerInfoNameWithGoalsDel(DisplayInformation);
newPlayer("Ronaldo", 60);
newPlayer("Rooney", 25);
PlayerBasedOnNumber number = new PlayerBasedOnNumber(DisplayInformation);
Console.WriteLine(number(8));
Console.WriteLine(number(10));
PlayerInformationWithGoals playerOne = new PlayerInformationWithGoals(DisplayInformation2);
PlayerInformationBasedOnNumberAndClub playerTwo = new PlayerInformationBasedOnNumberAndClub(DisplayInformation2);
//playerOne("Ronaldo", 50);
//playerTwo(7, "Real Madrid","Portugal");
Console.WriteLine(playerTwo.Method);
foreach (var item in playerTwo.Method.GetParameters())
{
Console.WriteLine($"{item.ParameterType.Name}, {item.Name}, {item.Position}, {item.IsOptional}, {item.DefaultValue} ");
}
SayHiDelegate sayHi = null;
sayHi = new SayHiDelegate(SayHiEnglish);
sayHi += new SayHiDelegate(SayHiSpanish);
sayHi += new SayHiDelegate(SayHiJapanese);
sayHi += new SayHiDelegate(SayHiItalian);
sayHi += new SayHiDelegate(SayHiGerman);
sayHi += new SayHiDelegate(SayHiArabic);
sayHi();
//genreic delegate
Console.WriteLine("------Generic Delegate------");
DisplayInfo <int> myNumber = new DisplayInfo <int>(DisplayValue);
Console.WriteLine(myNumber(42));
DisplayInfo <double> myDoubleNumber = new DisplayInfo <double>(DisplayValue);
Console.WriteLine(myDoubleNumber(34.32));
DisplayInfo <DateTime> myDate = new DisplayInfo <DateTime>(DisplayValue);
Console.WriteLine(myDate(new DateTime(2010, 2, 23)));
//Anonymous Method
Multiply MultiplyNumber = delegate(int n) { { return(n * 3); } };
Console.WriteLine(MultiplyNumber(10));
DisplayMessage Message = delegate { Console.WriteLine("Hi from the anonymous method "); };
Message();
//Lambda\
Console.WriteLine("-------Lambda-------");
MultiplyLambda MultiplyNumberLambda = n => n * 3;
Console.WriteLine(MultiplyNumber(10));
DisplayMessageLambda MessageLambda = () => Console.WriteLine("Hi from anonymous lambda");
Message();
//Func Delegate
Console.WriteLine("------Func Delegate-----");
Func <int, int, int> funcOne = AddTwoNumbers;
Console.WriteLine(AddTwoNumbers(3, 5));
Func <int> funcTwo = AddTwoNumbers;
Console.WriteLine(funcTwo());
//Action Delegate
Console.WriteLine("------Action Delegate--------");
Action <int> actionOne = DisplayInformationActionDelegate;
actionOne(16);
Action actionTwo = DisplayInformationActionDelegate;
actionTwo();
//Predict Delegate
Console.WriteLine("-------Predict Delegate------");
Predicate <int> condition = IsAdmin;
Console.WriteLine(condition(11));
Console.WriteLine(condition(10));
}