WPF学习记录一 WebBrowser中操作源代码

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        由于WPF的webBrowser控件与WINFORM的webBrowser控件非常的不一样，所以被折腾了一晚上，四处查阅相关资料，现将一些关键代码汇总一下。

首先要引入Microsoft.mshtml.dll 地址是C:\Program Files\Microsoft.NET\Primary Interop Assemblies

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);
}