1 Navigate(string urlString):浏览urlString表示的网址
 2 Navigate(System.Uri url)：浏览url表示的网址
 3 Navigate(string urlString, string targetFrameName, byte[] postData, string additionalHeaders): 浏览urlString表示的网址，并发送postData中的消息
 4 //（通常我们登录一个网站的时候就会把用户名和密码作为postData发送出去)
 5 GoBack()：后退
 6 GoForward()：前进
 7 Refresh()：刷新
 8 Stop()：停止
 9 GoHome()：浏览主页
10 WebBrowser控件的常用属性：
11 Document：获取当前正在浏览的文档
12 DocumentTitle：获取当前正在浏览的网页标题
13 StatusText：获取当前状态栏的文本
14 Url：获取当前正在浏览的网址的Uri
15 ReadyState：获取浏览的状态
16 WebBrowser控件的常用事件：
17 DocumentTitleChanged,
18 CanGoBackChanged,
19 CanGoForwardChanged,
20 DocumentTitleChanged,
21 ProgressChanged,
22 ProgressChanged
23 DocumentCompleted 页面加载完成之后的事件

1 webBrowser1.Document.All["控件ID"].InnerText;
2 或webBrowser1.Document.GetElementById("控件ID").InnerText;
3 或webBrowser1.Document.GetElementById("控件ID").GetAttribute("value");

 1 //根据Name获取元素
 2 public HtmlElement GetElement_Name(WebBrowser wb,string Name)
 3 {
 4     HtmlElement e = wb.Document.All[Name];
 5     return e;
 6 }
 7  
 8 //根据Id获取元素
 9 public HtmlElement GetElement_Id(WebBrowser wb, string id)
10 {
11     HtmlElement e = wb.Document.GetElementById(id);
12     return e;
13 }
14  
15 //根据Index获取元素
16 public HtmlElement GetElement_Index(WebBrowser wb,int index)
17 {
18     HtmlElement e = wb.Document.All[index];
19     return e;
20 }
21  
22 //获取form表单名name,返回表单
23 public HtmlElement GetElement_Form(WebBrowser wb,string form_name)
24 {
25     HtmlElement e = wb.Document.Forms[form_name];
26     return e;
27 }
28  
29  
30 //设置元素value属性的值
31 public void Write_value(HtmlElement e,string value)
32 {
33     e.SetAttribute("value", value);
34 }
35  
36 //执行元素的方法，如：click，submit(需Form表单名)等
37 public void Btn_click(HtmlElement e,string s)
38 {
39  
40     e.InvokeMember(s);
41 }

 1 [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
 2       static extern bool InternetGetCookieEx(string pchUrl, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);
 3       private static string GetCookieString(string url)
 4       {
 5           uint datasize = 1024;
 6           StringBuilder cookieData = http://www.mamicode.com/new StringBuilder((int)datasize);
 7           if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x2000, IntPtr.Zero))
 8           {
 9               if (datasize < 0)
10                   return null;
11               cookieData = http://www.mamicode.com/new StringBuilder((int)datasize);
12               if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero))
13                   return null;
14           }
15           return cookieData.ToString();
16       }
17       private void webBrowser1_DocumentCompleted_1(object sender, WebBrowserDocumentCompletedEventArgs e)
18       {
19           richTextBox1.Text = string.Empty;
20           if (cbcookie.Checked)
21           {
22               if (checkBox1.Checked)
23               {
24                   richTextBox1.Text = GetCookieString(textBox1.Text.Trim());
25               }
26               else
27               {
28                   richTextBox1.Text = webBrowser1.Document.Cookie;
29               }
30           }
31       }
32