一个浏览器循环刷新网页的例子

class Program

    {

        public static void Main(string[] args)

        {

            int i=0;

            String[] urlarray = new String[] { "http://www.baidu.com/", "http://msdn.microsoft.com/", "http://www.qidian.com/Default.aspx" };

            RefreshPage repa = new RefreshPage(0, 1, urlarray, false);

            while (i < 7)

            {

                repa.Next();

                repa.FindCurrent = "No";

                i++;

            }

        }

    }

 class RefreshPage

    {

        int CurrentPage;

        int NextPage;

        String[] UrlArray;

        public String FindCurrent="No";

        bool Stop;

        public RefreshPage(int CurrentPage, int NextPage, String[] UrlArray, bool Stop)

        {

            this.CurrentPage = CurrentPage;

            this.NextPage = NextPage;

            this.UrlArray = UrlArray;

            this.Stop = Stop;

        }

        public void Next()

        {

            SHDocVw.ShellWindows sw = new SHDocVw.ShellWindows();

            while (FindCurrent == "No")

            {

                foreach (SHDocVw.InternetExplorer Iweb in sw)

                {

if (Iweb.LocationURL.StartsWith(UrlArray[CurrentPage]))

                    {

                        HTMLDocument doc2 = Iweb.Document as HTMLDocument;

                        HTMLScriptElement script = (HTMLScriptElement)doc2.createElement("script");

                        script.text = "function newDoc(url){window.location.assign(url)} t=setTimeout(\"newDoc(" + "‘" + UrlArray[NextPage] + "‘" + ")\", 5000)";

                        HTMLBody body = doc2.body as HTMLBody;

                        if (body != null)

                        {

                            body.appendChild((IHTMLDOMNode)script);

                            FindCurrent = "Yes";

                        }

                        else

                            continue;

                    }

                }

            }

            CurrentPage+= 1;

            NextPage += 1;

            if (NextPage >= UrlArray.Length)

                NextPage = 0;

            if (CurrentPage >= UrlArray.Length)

                CurrentPage = 0;

            System.Console.WriteLine("current");

        }

    }

1. 首先需要引用两个dll

SHDocVw.dll

mshtml.dll

2.
本例子是按照所给出的数组，数组中存储的是将要循环访问的url，程序访问打开的网页寻找与数组的第一个url匹配的值，并且给他添加脚本，使该网页跳转到另一个url，即

数组的下一个值，使数组中所有url循环访问到。

3.
变量FindCurrent非常重要，由于浏览器打开一个网页需要时间，而程序读取确是，很快的，如果没有这个变量的判断，则代码会一直读不到当前要寻找的url。

while
(FindCurrent == "No")

同理读取到当前url，但是html内容还没有load完，也无法读到html
的body，会导致一直读不到html body，下面这个判断也非常重要

if
(body != null)

一个浏览器循环刷新网页的例子