Question

如何在WebBrowser控件中注入Javascript脚本

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Answer 1

问题：
我已经试过这个：
string newScript = textBox1.Text;
HtmlElement head = browserCtrl.Document.getElementsByTagName_r("head")[0];
HtmlElement scriptEl = browserCtrl.document.create_rElement_x_x("script");
lblStatus.Text = scriptEl.GetType().ToString();
scriptEl.SetAttribute("type", "text/javascript");
head.A(scriptEl);
scriptEl.InnerHtml = "function sayHello() { alert('hello') }";
scriptEl.InnerHtml和scriptEl.InnerText都给出了错误：
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)
有没有一个简单的方法在dom中写入脚本？
dom-文档对象模型
答案：
因为某些原因，Richard的解决方案在结束之前没有工作（insertAdjacentText引发了一个异常，失败了）。不管怎么样，它们似乎是这么工作的：
HtmlElement head = webBrowser1.Document.getElementsByTagName_r("head")[0];
HtmlElement scriptEl = webBrowser1.document.create_rElement_x_x("script");
IHTMLScriptElement element = (IHTMLScriptElement)scriptEl.DomElement;
element.text = "function sayHello() { alert('hello') }";
head.A(scriptEl);
webBrowser1.Document.InvokeScript("sayHello");

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