C# 委託 Action Func

標籤：

Action<T> : 傳遞參數，只進不出，所以方法為void

Func<in T, out Tv> : 傳遞參數，有進有出，所以傳遞的方法要return

 

 

using System;using System.Collections.Generic;using System.Linq;namespace rooxml{    public class main    {        public delegate void fucA(string s);        public static void Main ()        {            Action<string> ii = (string str) => {                Console.WriteLine(str);            };            new A().bb(ii);            fucA f = new A().aa;              f("777");  //委託直接調用            //new A ().bb (new A().aa);            Console.WriteLine(            new A ().cc ((int i)=>{                return (i*i).ToString();            })            );        }    }    class A{        public A(){ }        public void aa(string s){            Console.WriteLine (s+"666");        }        public void bb(Action<string> h){            h ("555");        }        public string cc(Func<int, string> c){            return c(7);        }                }}

 

https://msdn.microsoft.com/zh-cn/library/bb549151.aspx

C# 委託 Action Func