求教线程问题！！！急！~

Question

 rows = this.listView1.Items.Count;
            int i = 0;
            while (i < rows)
            {
                str = listView1.Items[i].SubItems[0].Text;   //str是网站的地址
                str2 = listView1.Items[i].SubItems[1].Text;  //str2是监控码 也就是网站的标题<title>
                i++;
                Thread newThreadi = new Thread(new ThreadStart(proc));
                newThreadi.Start();
                newThreadi.IsBackground = true;
                newThreadi.Join();
            }
        public void proc()
        {
            WebClient web = new WebClient();
            byte[] data = web.DownloadData(str);  //获取网站源代码
            string res = Encoding.Default.GetString(data);
            web.Dispose();
            int loc1 = res.IndexOf("<title>");
            int loc2 = res.IndexOf("</title>");
            title = res.Substring(loc1 + 7, loc2 - (loc1 + 7)).ToString(); //获得网站标题
            if (title.ToString()!=str2.ToString())
            {
                this.notifyIcon1.ShowBalloonTip(1, "温馨提示", "打开" + str2 + "页面时出现异常,请联系13523859270", ToolTipIcon.Error);
                
            }        }
这是我做的 监控网站标题的代码 用到线程 可每次执行线程的时候程序就会卡 类似于假死...谁能教教我怎么做才不会出现假死..谢谢了

Answer 1

习惯这样用。
Thread newThreadi = new Thread(proc); 
                newThreadi.Start(); 
                newThreadi.IsBackground = true; 

Answer 2

newThreadi.Join(); 
你去JOIN他干嘛。。Join等待他执行完毕，你既然在等这个线程执行完毕了，那不就变成同步执行了，既然如此那还开线程干什么，等于在一个线程上执行啊，把这句去掉

Answer 3

建议楼主这样
public void Start()
        {
            Thread thread = new Thread(new ThreadStart(Do));
            thread.Start();
        }        private void Do()
        {
            rows = this.listView1.Items.Count;
            int i = 0;
            while (i < rows) 
            {
                DownLoad();  
            }
        }        private void DownLoad()
        { 
            //
        }
功能分开.

Answer 4

private void Do()
        {
            rows = this.listView1.Items.Count;
            int i = 0;
            while (i < rows) 
            {
                DownLoad();  
                Thread.Sleep(1000);
            }
        }