public void Show()
{
{
NoReturnWithPara func = (x, y) => { };
func += (x, y) => Console.WriteLine("123");;
func.Invoke(3, 4);
}
//System.MulticastDelegate
Student student = new Student()
{
Id = 96,
Name = "Summer"
};
student.Study();
//Predicate<int>
//Func<string>
{
NoReturnNoPara method = new NoReturnNoPara(this.DoNothing);//2 委托的实例化
method.Invoke();//3 委托的调用
method();
//method.BeginInvoke(null, null);
this.DoNothing();
}
{
NoReturnNoPara method = new NoReturnNoPara(this.DoNothing); //当前类的实例方法
NoReturnNoPara method1 = new NoReturnNoPara(MyDelegate.DoNothingStatic); //当前类的静态方法
NoReturnNoPara method2 = new NoReturnNoPara(student.Study); //其他类的实例方法
NoReturnNoPara method3 = new NoReturnNoPara(Student.StudyAdvanced); //其他类的静态方法
}
{
NoReturnNoPara method = new NoReturnNoPara(this.DoNothing);
method += new NoReturnNoPara(this.DoNothing);
method += new NoReturnNoPara(MyDelegate.DoNothingStatic);
method += new NoReturnNoPara(student.Study);
method += new NoReturnNoPara(Student.StudyAdvanced);
method += new NoReturnNoPara(new Student().Study);
method += new NoReturnNoPara(Student.StudyAdvanced);
method += new NoReturnNoPara(() => Console.WriteLine("这里是lambda表达式"));
//+=就是把多个方法按顺序排成列表，invoke时按顺序执行
//method.Invoke();
method -= new NoReturnNoPara(this.DoNothing);
method -= new NoReturnNoPara(MyDelegate.DoNothingStatic);
method -= new NoReturnNoPara(student.Study);
method -= new NoReturnNoPara(new Student().Study);
method -= new NoReturnNoPara(Student.StudyAdvanced);
method -= new NoReturnNoPara(Student.StudyAdvanced);
method -= new NoReturnNoPara(() => Console.WriteLine("这里是lambda表达式"));
//-=就是从这个实例上，从后往前挨个匹配，找到第一个完全吻合的移除掉，且只移除一个，找不到不异常
method.Invoke();
//method.BeginInvoke(null, null);
foreach (NoReturnNoPara item in method.GetInvocationList())
{
item.BeginInvoke(null, null);
}
}
}
