C#WebBrowser控件使用教程與技巧收集

 先看下這幾天作的軟件功能:javascript

 

 

-------------------分隔線-------------------------------------------------------html

軟件所使用到的WebBrowser控件全部功能:java

Navigate(string urlString):瀏覽urlString表示的網址
Navigate(System.Uri url):瀏覽url表示的網址
Navigate(string urlString, string targetFrameName, byte[] postData, string additionalHeaders): 瀏覽urlString表示的網址,併發送postData中的消息
//(一般咱們登陸一個網站的時候就會把用戶名和密碼做爲postData發送出去)
GoBack():後退
GoForward():前進
Refresh():刷新
Stop():中止
GoHome():瀏覽主頁
WebBrowser控件的經常使用屬性:
Document:獲取當前正在瀏覽的文檔
DocumentTitle:獲取當前正在瀏覽的網頁標題
StatusText:獲取當前狀態欄的文本
Url:獲取當前正在瀏覽的網址的Uri
ReadyState:獲取瀏覽的狀態
WebBrowser控件的經常使用事件:
DocumentTitleChanged,
CanGoBackChanged,
CanGoForwardChanged,
DocumentTitleChanged,
ProgressChanged,
ProgressChanged
DocumentCompleted 頁面加載完成以後的事件
複製代碼

一、獲取非input控件的值:web

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

2.獲取input控件的值:cookie

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

三、給輸入框賦值:併發

//輸入框
user.InnerText = "myname";
password.InnerText = "123456";
webBrowser1.Document.GetElementById("password").SetAttribute("value", "Welcome123");

四、下拉、複選、多選:框架

 

//下拉框:
secret.SetAttribute("value", "question1");  
//複選框
rememberme.SetAttribute("Checked", "True");
//多選框
cookietime.SetAttribute("checked", "checked");

五、根據已知有ID的元素操做沒有ID的元素:函數

HtmlElement btnDelete = webBrowser1.Document.GetElementById(passengerId).Parent.Parent.Parent.Parent.FirstChild.FirstChild.Children[1].FirstChild.FirstChild;

 

六、獲取Div或其餘元素的樣式:post

webBrowser1.Document.GetElementById("addDiv").Style;

七、直接執行頁面中的腳本函數,帶動態參數或不帶參數都行網站

Object[] objArray = new Object[1];
objArray[0] = (Object)this.labFlightNumber.Text;
webBrowser1.Document.InvokeScript("ticketbook", objArray);
webBrowser1.Document.InvokeScript("return false");

八、自動點擊、自動提交:

HtmlElement btnAdd = doc.GetElementById("addDiv").FirstChild;
btnAdd.InvokeMember("Click");

九、自動賦值,而後點擊提交按鈕的時候若是出現腳本錯誤或一直加載的問題,通常都是點擊事件執行過快,這時須要藉助Timer控件延遲執行提交按鈕事件:

 

this.timer1.Enabled = true;
this.timer1.Interval = 1000 * 2;
private void timer1_Tick(object sender, EventArgs e)
{
    this.timer1.Enabled = false;
    ClickBtn.InvokeMember("Click");//執行按扭操做
}

十、屏蔽腳本錯誤:

將WebBrowser控件ScriptErrorsSuppressed設置爲True便可

十一、自動點擊彈出提示框:

 

private void webBrowser1_Navigated(object sender, WebBrowserNavigatedEventArgs e)
{
  //自動點擊彈出確認或彈出提示
  IHTMLDocument2 vDocument = (IHTMLDocument2)webBrowser1.Document.DomDocument;
  vDocument.parentWindow.execScript("function confirm(str){return true;} ", "javascript"); //彈出確認
  vDocument.parentWindow.execScript("function alert(str){return true;} ", "javaScript");//彈出提示
}

12.WebBrowser頁面加載完畢以後,在頁面中進行一些自動化操做的時候彈出框的自動點擊(屏蔽)

private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
{
    //自動點擊彈出確認或彈出提示
    IHTMLDocument2 vDocument = (IHTMLDocument2)webBrowser1.Document.DomDocument;
    vDocument.parentWindow.execScript("function confirm(str){return true;} ", "javascript"); //彈出確認
    vDocument.parentWindow.execScript("function alert(str){return true;} ", "javaScript");//彈出提示
    //下面是你的執行操做代碼
}

1三、獲取網頁中的Iframe,並設置Iframe的src

 

HtmlDocument docFrame = webBrowser1.Document.Window.Frames["mainFrame"].Document; 
或
HtmlDocument docFrame = webBrowser1.Document.All.Frames["mainFrame"].Document; 
docFrame.All["mainFrame"].SetAttribute("src", "http://www.sufeinet.com/");

網頁中存在Iframe的時候webBrowser1.Url和webBrowser1_DocumentCompleted中的e.Url不同,前者是主框架的Url,後者是當前活動框口的Url。
1四、讓控件聚焦

this.webBrowser1.Select();
this.webBrowser1.Focus();
doc.All["TPL_password_1"].Focus();

1五、打開本地網頁文件

webBrowser1.Navigate(Application.StartupPath + @"\Test.html");

1六、獲取元素、表單

//根據Name獲取元素
public HtmlElement GetElement_Name(WebBrowser wb,string Name)
{
    HtmlElement e = wb.Document.All[Name];
    return e;
}
 
//根據Id獲取元素
public HtmlElement GetElement_Id(WebBrowser wb, string id)
{
    HtmlElement e = wb.Document.GetElementById(id);
    return e;
}
 
//根據Index獲取元素
public HtmlElement GetElement_Index(WebBrowser wb,int index)
{
    HtmlElement e = wb.Document.All[index];
    return e;
}
 
//獲取form表單名name,返回表單
public HtmlElement GetElement_Form(WebBrowser wb,string form_name)
{
    HtmlElement e = wb.Document.Forms[form_name];
    return e;
}
 
 
//設置元素value屬性的值
public void Write_value(HtmlElement e,string value)
{
    e.SetAttribute("value", value);
}
 
//執行元素的方法,如:click,submit(需Form表單名)等
public void Btn_click(HtmlElement e,string s)
{
 
    e.InvokeMember(s);
}

17。獲取Cookie

[DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
      static extern bool InternetGetCookieEx(string pchUrl, string pchCookieName, StringBuilder pchCookieData, ref System.UInt32 pcchCookieData, int dwFlags, IntPtr lpReserved);
      private static string GetCookieString(string url)
      {
          uint datasize = 1024;
          StringBuilder cookieData = new StringBuilder((int)datasize);
          if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x2000, IntPtr.Zero))
          {
              if (datasize < 0)
                  return null;
              cookieData = new StringBuilder((int)datasize);
              if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, IntPtr.Zero))
                  return null;
          }
          return cookieData.ToString();
      }
      private void webBrowser1_DocumentCompleted_1(object sender, WebBrowserDocumentCompletedEventArgs e)
      {
          richTextBox1.Text = string.Empty;
          if (cbcookie.Checked)
          {
              if (checkBox1.Checked)
              {
                  richTextBox1.Text = GetCookieString(textBox1.Text.Trim());
              }
              else
              {
                  richTextBox1.Text = webBrowser1.Document.Cookie;
              }
          }
      }

18.怎麼設置代理

/// <summary>
   /// 代理結構體
   /// </summary>
   public struct Struct_INTERNET_PROXY_INFO
   {
       public int dwAccessType;
       public IntPtr proxy;//IP以及端口號
       public IntPtr proxyBypass;
   };
/// <summary>
        /// 設置代理的Api
        /// </summary>
        /// <returns></returns>
        [DllImport("wininet.dll", SetLastError = true)]
        private static extern bool InternetSetOption(IntPtr hInternet, int dwOption, IntPtr lpBuffer, int lpdwBufferLength);
 
        /// <summary>
        /// 代理IP以及端口號
        /// </summary>
        /// <param name="strProxy"></param>
        private void RefreshIESettings(string strProxy)
        {
            const int INTERNET_OPTION_PROXY = 38;
            const int INTERNET_OPEN_TYPE_PROXY = 3;
 
            Struct_INTERNET_PROXY_INFO struct_IPI;
 
            // Filling in structure 
            struct_IPI.dwAccessType = INTERNET_OPEN_TYPE_PROXY;
            struct_IPI.proxy = Marshal.StringToHGlobalAnsi(strProxy);
            struct_IPI.proxyBypass = Marshal.StringToHGlobalAnsi("local");
 
            // Allocating memory 
            IntPtr intptrStruct = Marshal.AllocCoTaskMem(Marshal.SizeOf(struct_IPI));
 
            // Converting structure to IntPtr 
            Marshal.StructureToPtr(struct_IPI, intptrStruct, true);
 
            bool iReturn = InternetSetOption(IntPtr.Zero, INTERNET_OPTION_PROXY, intptrStruct, Marshal.SizeOf(struct_IPI));
        }

--------------------
RefreshIESettings("41.129.53.227:80");
                webBrowser1.Navigate("http://www.sufeinet.com");

 

19.怎麼在加載完成某個頁面以後執行代碼

//本事件是當每次加載完成當前頁面後纔會執行的
        private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            //e.Url是當前加載的頁面,
            if (e.Url.ToString().Contains("http://sufeinet.com"))
            {
                //執行操做1
            }
            else if (e.Url.ToString().Contains("http://baidu.com"))
            {
                //執行操做2
            }
        }

20.怎麼禁止在新窗口中打開網頁

 

private void webBrowser1_NewWindow(object sender, CancelEventArgs e)
{
        string url = ((System.Windows.Forms.WebBrowser)sender).StatusText;
        webBrowser1.Navigate(url);
        e.Cancel = true;
     
}

21.怎麼設置Cookie

webBrowser1.Document.Cookie=「你的Cookie值」;
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