FA C# Async 自动流程

C#

Async 方式

简单的流程测试：

去上班
吃早餐
上班中...
摸鱼
下班

using System;
using System.Collections.Generic;
using System.Diagnostics;
using System.Linq;
using System.Net;
using System.Text;
using System.Threading;
using System.Threading.Tasks;

namespace ConsoleApp1
{
    class Program
    {
        static void Main(string[] args)
        {
            MyWorkStep ms = new MyWorkStep();
            ms.AutoFlag = true;

            ms.DoRun();

            Console.ReadKey();
        }
    }

    enum WorkStep
    {
        One,
        Two,
        Three,
    }

    enum StepResult
    {
        OK,
        Error
    }

    class MyWorkStep
    {
        public bool AutoFlag = false;

        private ulong _count = 0;

        private WorkStep _currentStep = WorkStep.One;

        public void DoRun()
        {
            while (AutoFlag)
            {
                switch (_currentStep)
                {
                    case WorkStep.One:
                        Task<StepResult> firstRes = DoFirstAsync();
                        Task<StepResult> thirdRes = DoThirdAsync();

                        if (firstRes.Result == StepResult.OK && thirdRes.Result == StepResult.OK)
                        {
                            _currentStep = WorkStep.Two;
                            break;
                        }
                        Console.WriteLine("第一步失败");
                        AutoFlag = false;
                        return;
                    case WorkStep.Two:
                        Task<StepResult> secondRes = DoSecondAsync();
                        Task<StepResult> fishRes = DoFish();
                        if (secondRes.Result == StepResult.OK && fishRes.Result == StepResult.OK)
                        {
                            _currentStep = WorkStep.Three;
                            break;
                        }
                        if (secondRes.Result == StepResult.Error)
                        {
                            Console.Write("\n停机:");
                            AutoFlag = false;
                        }
                        Console.WriteLine("第二步失败");
                        return;
                    case WorkStep.Three:
                        Task<StepResult> fourthRes = DoFourthAsync();
                        if (fourthRes.Result == StepResult.OK)
                        {
                            _currentStep = WorkStep.One;
                            Console.WriteLine();
                            break;
                        }
                        Console.WriteLine("第三部失败");
                        return;
                }
            }
        }

        private async Task<StepResult> DoFirstAsync()
        {
            Console.WriteLine("去上班");
            StepResult res = await Task.Run(() =>
            {
                Thread.Sleep(2000);
                return StepResult.OK;
            });

            return res;
        }

        private static int count = 0;

        private async Task<StepResult> DoSecondAsync()
        {
            Console.WriteLine("上班中...");
            StepResult res = await Task.Run(() =>
            {
                count++;
                Thread.Sleep(1500);
                if (count < 3)
                    return StepResult.OK;
                return StepResult.Error;
            });

            return res;
        }

        private async Task<StepResult> DoThirdAsync()
        {
            Console.WriteLine("吃早餐");
            StepResult res = await Task.Run(() =>
            {
                Thread.Sleep(1500);
                return StepResult.OK;
            });

            return res;
        }

        private async Task<StepResult> DoFish()
        {
            Console.WriteLine("摸鱼");
            StepResult res = await Task.Run(() =>
            {
                Thread.Sleep(1000);
                return StepResult.OK;
            });

            return res;
        }

        private async Task<StepResult> DoFourthAsync()
        {
            Console.WriteLine("下班");
            StepResult res = await Task.Run(() =>
            {
                Thread.Sleep(1000);
                return StepResult.OK;
            });

            return res;
        }
    }
}

输出：

去上班
吃早餐
上班中...
摸鱼
下班

去上班
吃早餐
上班中...
摸鱼
下班

去上班
吃早餐
上班中...
摸鱼

停机:第二步失败