public void Execute()
{
Student st1 = new Student("王翦");
Teacher th1 = new Teacher("卫青");
//MyDelegate01 md1 = new MyDelegate01(st1.SayHello);
MyDelegate01 md1 = st1.SayHello; //此处不可以用+=，因为此时委托还未实例化
md1 += st1.DoHomework; //多播委托（一个委托可以关联多个方法）
md1 += th1.TeachEnglish;
md1 += st1.DoHomework; //同一个方法，可以添加多次，这样委托调用时就会执行多次
//也可以添加静态方法
md1 += Student.PlayGame;
Student st2 = new Student("小李");
Teacher th2 = new Teacher("老李");
MyDelegate01 md2 = new MyDelegate01(st2.DoHomework);
//md2 += st2.SayHello;
md2 += th2.TeachEnglish;
//将委托md2拥有的方法，添加到md1上
md1 += md2;
md1 -= st1.DoHomework; //会将后添加的方法移除
md1 -= st2.SayHello; //移除一个不存在的方法，不会报错
//md1.Invoke();//调用执行委托
md1();//调用执行委托
}
static void Main(string[] args)
{
//Delegates
//1. Placeholder for one of more methods
//2. Can use in anonymous 'lambda' expressions
//3. Link to events
var delegateInstance = new MyDelegate01(Method01);
delegateInstance();
}
static void Main(string[] args)
{
MyDelegate01 myDelegateInstance = Method01;
Action myotherdelegateinstance = Method02;
myDelegateInstance();
Delegate_2 delegate_2instance = Method03;
Console.WriteLine(delegate_2instance(6, true));
}
static void Main(string[] args)
{
// Delegates
// 1. Placeholders for one or more methods
// 2. Can use in anonymous 'lambda' expressions, very useful particularly with 'async' web calls
// 3. Link to events ==> EVENT FIRES EG BUTTON CLICK ==> All methods must match pattern in our delegate
// void MyDelegate01(); Any methods match pattern void MyMethod();
// string (int) string (int);
// Create event ==> run given methods
// 1. Create delegate (top)
// 2. Create delegate instance
var delegateInstance = new MyDelegate01(Method01);
// 3. run delegate instance ==> call our method
delegateInstance();
}
static void Main(string[] args)
{
//Delegates
//1. Placeholder for one or more methods
//2. Can use in annoymous 'lambda' expressions, very usefull particually with 'async' web calls
//3. Link to events ==> EVENT fires eg button click ==> all methods must match pattern given in our delegate
// void myDelegate01(); any methods would have to match pattern void myMethod();
// string (int) string (int)
//Create an event ==> and run given methods
//1. Create Delegate
//2. Create delegate instance
var delegateInstance = new MyDelegate01(Method01);
//3. Run the delegate instance and will call the method
delegateInstance();
}
