判断是否网络正常  

private  bool IsConnectedToInternet()

        ...{

            int Desc;

            return internet.InternetGetConnectedState(out  Desc, 0);

        }   

设置默认页面:

webBrowser1.Navigate(new Uri("http://www.ic2ic.com/copy.jsp"));

登录代码:

      private void btnlogin_Click(object sender, EventArgs e)

        ...{

            webBrowser1.Document.GetElementById("id").InnerText =txtuser.Text.ToString().Trim();//fill name

            webBrowser1.Document.GetElementById("passwd").InnerText =txtpwd.Text.ToString().Trim();//fill pwd

            HtmlElement formLogin = webBrowser1.Document.Forms["frmLogin"];

            formLogin.InvokeMember("submit");

            Thread.Sleep(5000);

            herfclick("http://www.ic2ic.com/upload.jsp");//这是登录成功的操作,跳转到//upload.asp

                                                         //注意不是直接跳过去的,模拟点击链接

                                                         //SESSION不会丢失

            herfclick("http://www.ic2ic.com/copy.jsp"); 

        }

模拟点击链接:

   private void herfclick(string url)

        ...{

            for (int i = 0; i < webBrowser1.Document.All.Count; i++)

            ...{

                if (webBrowser1.Document.All[i].TagName == "A" && webBrowser1.Document.All[i].GetAttribute("href").ToString().Trim() ==url)

                ...{

                    webBrowser1.Document.All[i].InvokeMember("click");//引发”CLICK”事件

                    break;

                }

            }

        }

运行网页中的JS函数

    private void callJsMethod(string jsfun,string jsParameter)//函数名字,函数参数

        ...{

            HtmlDocument doc = webBrowser1.Document;

            doc.InvokeScript(jsfun,new object[]...{jsParameter});

        }

填充数据:

  private void filldate(string txt)

        ...{

            HtmlElement frmWord = webBrowser1.Document.Forms["frmWord"];//找到from

            HtmlElementCollection txtarea = frmWord.GetElementsByTagName("TEXTAREA");

            HtmlElementCollection radio = frmWord.GetElementsByTagName("INPUT");

            radio[2].InvokeMember("click");//选择radio控件

            txtarea[0].InnerText = txt.ToString();

        }