程序代码：

class A
{
    //问题1：我看好多教程里面说"delegate的定义必须放到任何类的外面"，但是我看例子有些在类里面声明，而且运行正确
    public delegate void delegateDemo(int number);
    
    static void Main()
    {
        //问题2:2和4为什么可以省略new
        delegateDemo myDelegate = new delegateDemo(A.fun1);//1
//        delegateDemo myDelegate = fun1;//2
//              A a = new A();
//              delegateDemo myDelegate = new delegateDemo(a.fun2);//3
//              delegateDemo myDelegate = a.fun2;//4
    }
        //静态方法
    private static void fun1(int number)
    {
        ...
    }
        //实例方法
        private void fun2(int number)
        {
                ...
        }
}

最近学C#遇到的问题比较多，分少，望见谅

程序代码：

1    public delegate bool delegates(int number);
2    class A
3    {
4        static void Main()
5        {
6            delegates myDelegate = fun1;
7            int number;
8            fun3(number, myDelegate);
9            fun3(number, fun2);
10        }
11        private static bool fun1(int number)
12        {
13        }
14        private static bool fun2(int number)
15        {
16        }
17        private static void fun3(int number, delegates myDelegate)
18        {
19            myDelegate(a);
20            ...
21        }
22    }