创建Task示例的各种方式

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using System;

using System.Threading;

using System.Threading.Tasks;

 

namespace ConsoleApp1

{

    //测试创建Task示例的各种方式

    public class TaskTest

    {

        //定义方法，返回void，入参为Object

        private static void OpNormal(Object state)

        {

            Console.WriteLine("In OpNormal,state=" + state);

            Thread.Sleep(1000);

        }

 

        //定义方法，返回void，入参非Object

        private static void OpWithParamInt(Int32 state)

        {

            Console.WriteLine("In OpWithParamInt,state=" + state.ToString());

            Thread.Sleep(1000);

        }

 

        //定义方法，返回类型非void，入参非Object

        private static Int32 OpWithParamIntAndReturnInt(Int32 state)

        {

            Console.WriteLine("In OpWithParamIntAndReturnInt,state=" + state.ToString());

            Thread.Sleep(1000);

            return state;

        }

 

        //定义方法，返回类型非void，入参为多个

        private static String OpWithParamIntAndReturnInt2(ParamObj o)

        {

            String str = o.n.ToString() + o.s;

            Console.WriteLine("In OpWithParamIntAndReturnInt2,state=" + o.n.ToString() + "，s=" + o.s);

            Thread.Sleep(1000);

            return str;

        }

 

        class ParamObj

        {

            public int n { get; set; }

            public string s { get; set; }

        }

 

        public static void RunTest()

        {

            //参数Object，无返回值

            Task t1 = new Task(OpNormal, 100);

            t1.Start();

 

            //参数Int32，无返回值

            Task t2 = new Task(state => OpWithParamInt((Int32)state), 200);

            t2.Start();

 

            //参数Int32，有返回值

            Task<Int32> t3 = new Task<Int32>(n => OpWithParamIntAndReturnInt((Int32)n), 300);

            //Task<Int32> t3 = new Task<Int32>(() => OpWithParamIntAndReturnInt(300)); //另一种写法

            t3.Start();

            //指定参数timeout，毫秒，如果在指定时间内执行完毕则返回true，否则返回false.

            bool b = t3.Wait(1000000);

            Console.WriteLine("The result is:" + t3.Result + "，The wait result is:" + b.ToString());

 

            //多个参数，有返回值

            ParamObj obj = new ParamObj { n = 400, s = "aaa" };

            try

            {

                Task<String> t4 = new Task<string>(o => OpWithParamIntAndReturnInt2((ParamObj)o), obj);

                t4.Start();

                Console.WriteLine("The OpWithParamIntAndReturnInt2 result is:" + t4.Result);

            }

            catch (Exception ex)

            {

 

            }

        }

    }

}