Windows多线程，

Windows多线程，

 

 

//简单的引出多线程是肿么回事儿。。。。当点击下载的时候，下载内容还没结束也可以点击资源库，其实这就用了另一个线程，弹出“下载完成”对话框的时候，没有点击确定是不能点击主页面内容的，这就是用------Action action = new Action(Msg);            this.Invoke(action);------把对话框交给主页面去处理

namespace Windows多线程
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void btnDownload_Click(object sender, EventArgs e)
        {
            this.backgroundWorker1.RunWorkerAsync();
        }

        private void btnZiYuanKu_Click(object sender, EventArgs e)
        {
            MessageBox.Show("精彩大片，应有尽有");
        }

        private void backgroundWorker1_DoWork(object sender, DoWorkEventArgs e)
        {
            for (int i = 30320; i < 30340; i++)
            {
                try
                {
                    WebClient client = new WebClient();
                    client.DownloadFile(@"https://job.cnblogs.com/offer/" + i + "/", @"E:\movices\" + i + ".html");
                }
                catch (Exception ex)
                { }
            }
            Action action = new Action(Msg);
            this.Invoke(action);
        }
        private void Msg()
        {
            MessageBox.Show("下载成功");
        }
    }
}