mshtml与System.Windows.Forms.HtmlElement

(1)打开并操作外部IE，这个只有MSHTML能做到：

打开ie：

SHDocVw.ShellWindows shellWindows = new SHDocVw.ShellWindowsClass();

object objFlags = 1;

object objTargetFrameName = "";

object objPostData = "";

object objHeaders = "";

SHDocVw.InternetExplorer webBrowser1= (SHDocVw.InternetExplorer)shellWindows.Item(shellWindows.Count-1);

webBrowser1.Navigate(“http://www.google.cn”, ref objFlags, ref objTargetFrameName, ref objPostData, ref objHeaders);

（2）如果里面有iframe，要给里面的text填充信息

HtmlDocument main_formDoc = webBrowser1.Document;

IHTMLDocument2 main_mshtmlIHTMLDoc = (IHTMLDocument2)main_formDoc.DomDocument;

Object frame_index = 0;

IHTMLWindow2 target_mshtmlIHTMLWindow = (IHTMLWindow2)main_mshtmlIHTMLDoc.frames.item(ref frame_index);

IHTMLDocument2 target_mshtmlIHTMLDoc = CodecentrixSample.CrossFrameIE.GetDocumentFromWindow(target_mshtmlIHTMLWindow);

HTMLDocument doc = target_mshtmlIHTMLDoc as HTMLDocument;

IHTMLElementCollection eCollection = doc.getElementsByTagName("input");

foreach (IHTMLElement element in eCollection)

{

if(element.getAttribute("name")=="username")

element.innerHTML = name.Trim();

}
---------------------------------------------------------------------

HtmlElementCollection submits = webBrowser1.Document.GetElementsByTagName("select");

foreach (HtmlElement submit in submits)

{

if (submit.GetAttribute("name") == "typeid")

{

submit.SetAttribute("value", siteid);

//submit.InvokeMember("click");

break;

}

}

（3）要点击里面的某个按钮

mshtml.IHTMLDocument2 doc2=(mshtml.IHTMLDocument2)myWeb.Document;

mshtml.IHTMLElementCollection inputs;

inputs=(mshtml.IHTMLElementCollection)doc2.all.tags("INPUT");

mshtml.IHTMLElement element=(mshtml.IHTMLElement)inputs.item("SubmitBut",0);

element.click();

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HtmlElement loginsubmit = webBrowser1.Document.GetElementById("loginsubmit");

loginsubmit.InvokeMember("click");

（4）根据元素ID获取元素的值。

比如要获取<img class="" id="regimg" src="/register/checkregcode.html?1287068791" width="80" height="22">这个标签里的src属性的值：

mshtml.IHTMLDocument2 doc2 = (mshtml.IHTMLDocument2)webBrowser1.Document;

mshtml.IHTMLElement img = (mshtml.IHTMLElement)doc2.all.item("regimg", 0);

string imgUrl = (string)img.getAttribute("src");

----------------------------------------------------------------

HtmlElement regbimp1 = webBrowser1.Document.GetElementById("regimg");

string imgUrl = (string)img.getAttribute("src");

（5）执行JS

mshtml.IHTMLWindow2 win = (mshtml.IHTMLWindow2)doc2.parentWindow;

win.execScript("changeRegImg()", "javascript");//使用JS

-------------------------

IHTMLWindow2 login = (mshtml.IHTMLWindow2)webBrowser1.Document.Window.DomWindow;

login.execScript("updateseccode()", "javascript");

（6）、禁止JS，WPF下目前发现唯一适用的一种方法：

public void HideScriptErrors(WebBrowser wb, bool Hide)

{

FieldInfo fiComWebBrowser = typeof(WebBrowser).GetField("_axIWebBrowser2", BindingFlags.Instance | BindingFlags.NonPublic);

if (fiComWebBrowser == null) return;

object objComWebBrowser = fiComWebBrowser.GetValue(wb);

if (objComWebBrowser == null) return;

objComWebBrowser.GetType().InvokeMember(

"Silent", BindingFlags.SetProperty, null, objComWebBrowser, new object[] { Hide });

}

void webBrowser1_Navigated(object sender, NavigationEventArgs e)

{

HideScriptErrors(webBrowser1,

true);

}