using System;

namespace FuncDemo

{

    class Program

    {

        static void Main(string[] args)

        {

            //无参数的fanc委托

            var ss1 = FuncCommon.GetT<string>(() => {

               return "HelloWorld";

            });

            Console.WriteLine(ss1);

            //带参数的fanc委托

            var ss = FuncCommon.GetTn<string>((str,m) =>

            {

                var cc = str + DateTime.Now.AddDays().ToString();

                return cc+ m;

            });

            Console.WriteLine(ss);

            Console.ReadKey();

        }

    }

}

using System;

using System.Collections.Generic;

using System.Text;

namespace FuncDemo

{

    public static class FuncCommon

    {

        public static T GetT<T>(Func<T> func)

        {

            T t = default(T);

            t = func.Invoke();

            return t;

        }

        public static T GetTn<T>(Func<string,string, T> func)

        {

            T t = default(T);

            t = func.Invoke("HelloWorld","\n"+DateTime.Now.ToString());

            return t;

        }

    }

}