1、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");
2、填写表单，并确定
mshtml.IHTMLElement loginname = (mshtml.IHTMLElement)doc2.all.item("loginname", 0); mshtml.IHTMLElement loginPW = (mshtml.IHTMLElement)doc2.all.item("password", 0); mshtml.IHTMLElement loginBT = (mshtml.IHTMLElement)doc2.all.item("formsubmit", 0); mshtml.IHTMLElement loginYZ = (mshtml.IHTMLElement)doc2.all.item("regcode", 0); loginname.setAttribute("value", tbLoginName.Text);
loginPW.setAttribute("value", tbLoginPassWord.Password);
loginYZ.setAttribute("value", tbYZ.Text);
loginBT.click();
3、获取源码
textBox1.Text = doc2.body.innerHTML;
4、执行JS
mshtml.IHTMLWindow2 win = (mshtml.IHTMLWindow2)doc2.parentWindow;
win.execScript("changeRegImg()", "javascript");//使用JS
5、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);
}