如何在WebBrowser控件中注入Javascript？
如何在WebBrowser控件中注入Javascript？
提问于 2008-09-30 16:05:55
我试过了：
string newScript = textBox1.Text;
HtmlElement head = browserCtrl.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = browserCtrl.Document.CreateElement("script");
lblStatus.Text = scriptEl.GetType().ToString();
scriptEl.SetAttribute("type", "text/javascript");
head.AppendChild(scriptEl);
scriptEl.InnerHtml = "function sayHello() { alert('hello') }";scriptEl.InnerHtml和scriptEl.InnerText都会给出错误：
System.NotSupportedException: Property is not supported on this type of HtmlElement.
at System.Windows.Forms.HtmlElement.set_InnerHtml(String value)
at SForceApp.Form1.button1_Click(Object sender, EventArgs e) in d:\jsight\installs\SForceApp\SForceApp\Form1.cs:line 31
at System.Windows.Forms.Control.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnClick(EventArgs e)
at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
at System.Windows.Forms.Control.WndProc(Message& m)
at System.Windows.Forms.ButtonBase.WndProc(Message& m)
at System.Windows.Forms.Button.WndProc(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)有没有一种简单的方法可以将脚本注入到dom中？
回答 14
Stack Overflow用户
回答已采纳
发布于 2008-09-30 19:11:43
由于某些原因，理查德的解决方案在我这一端不起作用(insertAdjacentText失败并出现异常)。然而，这似乎是可行的：
HtmlElement head = webBrowser1.Document.GetElementsByTagName("head")[0];
HtmlElement scriptEl = webBrowser1.Document.CreateElement("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
element.text = "function sayHello() { alert('hello') }";
head.AppendChild(scriptEl);
webBrowser1.Document.InvokeScript("sayHello");This answer解释了如何将IHTMLScriptElement接口添加到项目中。
Stack Overflow用户
发布于 2011-06-03 10:33:41
HtmlDocument doc = browser.Document;
HtmlElement head = doc.GetElementsByTagName("head")[0];
HtmlElement s = doc.CreateElement("script");
s.SetAttribute("text","function sayHello() { alert('hello'); }");
head.AppendChild(s);
browser.Document.InvokeScript("sayHello");(在Windows4/ .NET Forms应用程序中测试)
编辑:修复函数集中的大小写问题。
Stack Overflow用户
发布于 2011-12-31 15:49:54
这是我在做完这件事后发现的最简单的方法：
string javascript = "alert('Hello');";
// or any combination of your JavaScript commands
// (including function calls, variables... etc)
// WebBrowser webBrowser1 is what you are using for your web browser
webBrowser1.Document.InvokeScript("eval", new object[] { javascript });全局JavaScript函数eval(str)所做的就是解析并执行以str编写的任何内容。检查w3schools ref here。
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原文链接：
https://stackoverflow.com/questions/153748
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