在WebBrowser中执行javascript脚本的几种方法整理(execScript/InvokeScript/NavigateScript) 附完整源码

【实例简介】

涵盖了几种常用的 webBrowser执行javascript的方法,详见示例截图以及代码 【实例截图】

 

 

 

【核心代码】 execScript方式:

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 using mshtml; using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;   namespace WebBrowser_Script {     public partial class execScriptForm : Form     {         public execScriptForm()         {             InitializeComponent();         }           private void btnOpen_Click(object sender, EventArgs e)         {             this.webBrowser1.Navigate(this.txtUrl.Text);         }           private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)         {             IHTMLDocument2 Doc2 = (IHTMLDocument2)webBrowser1.Document.DomDocument;               if (Doc2.parentWindow != null)             {                 string order = " alert('这里可以执行页面中存在的任意函数' document.body.innerHTML); ";                 //MessageBox.Show(order);                 Doc2.parentWindow.execScript(order, "JavaScript");             }         }     } }

NavigateScript方式:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Runtime.InteropServices; using System.Text; using System.Windows.Forms;   namespace WebBrowser_Script {     [ComVisible(true)]     public partial class NavigateScriptForm : Form     {         public NavigateScriptForm()         {             InitializeComponent();           }           private void btnOpen_Click(object sender, EventArgs e)         {             this.webBrowser1.Navigate(this.txtUrl.Text);           }           private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)         {             webBrowser1.Navigate(@"javascript:             function alert(str)             {                 window.external.alertMessage(str);             }");             webBrowser1.ObjectForScripting = this;         }         public void alertMessage(string s)         {             MessageBox.Show(s, "这是自定义的title,呵呵呵");         }           private void NavigateScriptForm_Load(object sender, EventArgs e)         {             webBrowser1.DocumentText = @"             <html>                 <input type=""button"" value=""测试"" onclick=""alert('好例子网 路过');"">             </html>             ";         }     } }

 

 

InvokeScript方式:

 

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Windows.Forms;   namespace WebBrowser_Script {     public partial class InvokeScriptForm : Form     {         public InvokeScriptForm()         {             InitializeComponent();             this.webBrowser1.Navigate(this.txtUrl.Text);         }           private void btnOpen_Click(object sender, EventArgs e)         {             var input = this.webBrowser1.Document.GetElementById("kw");             input.SetAttribute("value", "好例子网");             var button = this.webBrowser1.Document.GetElementById("su");             button.InvokeMember("click");         }           private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)         {           }     } }

 

 

 另外:InvokeScript 还可以带参数的形式执自定义行脚本方法

例如: webBrowser1.Document.InvokeScript("getPwd", new object[] { "18780110000" })

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