[C#] Func、Action的简单使用

参考代码:

using System;
using System.Collections.Generic;
using System.Linq;

namespace FuncActionDemo
{
    class FuncActionTest
    {
        public void Test1(List<int> data,Func<int,bool> filter)
        {
            var result = data.Where(x => filter(x)).ToList();
            result.ForEach(x =>
            {
                Console.WriteLine(x);
            }
            );

        }
        public void Test2(List<int> data,Action<int, int>action)
        {
            var d = data.OrderBy(x => x).ToList();
            action(d[0], d[1]);
         
        }
    }
    class Program
    {
        static void Main(string[] args)
        {
            FuncActionTest funcTest = new FuncActionTest();
            List<int> data = new List<int> { 1, 2, 4, 7, 8, 9 };
            funcTest.Test1(data, x => {
                if (x % 2 == 0)
                    return true;
                else
                    return false;
            });
            funcTest.Test1(data, x => { return FilterEven(x); });
            funcTest.Test1(data, FilterEven);
            Console.WriteLine("-----------");
            funcTest.Test2(data,Add);
        }
        static bool FilterEven(int s)
        {
            if (s % 2 == 0)
                return true;
            else
                return false;
        }
        static void Add( int a, int b)
        {
            Console.WriteLine(a + b);
        }
    }
}