BackgroundWorker不工作Async

Question

我今天做了一个小测试,以了解有关BackgroundWorker的更多信息.

在我看来,它不适用于asychronuos模式.首先它做了Do1和下一个Do2.Do2更短,Do1需要更多时间,但是程序等待Do1完成并且下一次启动Do2.我对吗？谢谢!

using System;
using System.Collections;
using System.Collections.Generic;
using System.ComponentModel;
using System.Diagnostics;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
using System.Transactions;

namespace ConsoleApplication16
{
    public interface I 
   {
        void UstawWiek(string w);
        void PokazWiek(); 
   }

    class rrr
    {

        public delegate void MojDelegat();

        public static void Do1(object sender, DoWorkEventArgs e)
        {
            System.Threading.Thread.Sleep(4000);
            Console.WriteLine("Do1");
        }

        public static void Do2(object sender, DoWorkEventArgs e)
        {
            System.Threading.Thread.Sleep(1000);
            Console.WriteLine("Do2");
        }


        static void Main(string[] args)
        {          

           BackgroundWorker bw = new BackgroundWorker();
           bw.DoWork += new DoWorkEventHandler(Do1);
           bw.DoWork += new DoWorkEventHandler(Do2);
           bw.RunWorkerAsync();

           int i =0;
           while ( bw.IsBusy)
           {
           Console.WriteLine("Waiting {0}",i);
           System.Threading.Thread.Sleep(100);
           i++;
           }

           Console.WriteLine("Done!"); 
           Console.ReadKey();

        }
    }     
}

Answer 1

您添加了两个事件处理程序BackgroundWorker.
与所有其他事件一样,DoWork事件将按顺序同步运行其所有处理程序.

要异步运行两个单独的东西,你需要两个BackgroundWorker.

但是,你应该使用Task.Run(); 它更简单,更易于组合.