新建线程方法

//建立事件
        void    tianqi()
        {
            //天气预报
            //string url = @"tianqiapi.com/api.php?style=tk&skin=sogou";//天气预报的网页地址
            //webBrowser1.Url = new Uri("http://" + url);
            //webBrowser1.ScrollBarsEnabled = false;
            webBrowser1.Navigate("http://tianqiapi.com/api.php?style=tk&skin=sogou");//绑定网址
            //webBrowser1.ScriptErrorsSuppressed = false;
            webBrowser1.ScrollBarsEnabled = false;//不显示滚动条
        }
//创建线程
            ThreadStart threadStart2 = new ThreadStart(tianqi);//通过ThreadStart委托告诉子线程执行什么方法　　
            Thread thread2 = new Thread(threadStart2);
            thread2.Start();//启动新线程

使其他线程可以访问主线程窗体上的控件

Control.CheckForIllegalCrossThreadCalls = false;//去掉线程访问主线程UI控件的安全检查,使多线程可以访问winform上的控件

控制方法的执行时间,超时则强制退出方法执行

static void Main(string[] args)
    {
        //try the five second method with a 6 second timeout
        CallWithTimeout(FiveSecondMethod, 6000);

        //try the five second method with a 4 second timeout
        //this will throw a timeout exception
        CallWithTimeout(FiveSecondMethod, 4000);
    }

    static void FiveSecondMethod()
    {
        Thread.Sleep(5000);
    }
//用来写超时获取则结束线程，action是事件，int是毫秒
    static void CallWithTimeout(Action action, int timeoutMilliseconds)
    {
        Thread threadToKill = null;
        Action wrappedAction = () =>
        {
            threadToKill = Thread.CurrentThread;
            action();
        };

        IAsyncResult result = wrappedAction.BeginInvoke(null, null);
        if (result.AsyncWaitHandle.WaitOne(timeoutMilliseconds))
        {
            wrappedAction.EndInvoke(result);
        }
        else
        {
            threadToKill.Abort();
            //throw new TimeoutException();
        }
    }