C#控制IE浏览器自动点击等事件WebBrowser，mshtml.IHTMLDocument2

可以实现例如通过应用程序操作google搜索，用户输入要搜索的内容，然后在google中搜索；可以自动点击网页上的按钮等功能
1. 加入对Microsoft Internet Controls的引用；
2. 加入对Microsoft HTML Object Library的引用；
（要引入Microsoft.mshtml.dll 地址是C:/Program Files/Microsoft.NET/Primary Interop Assemblies）
3. 通过mshtml.IHTMLDocument2、SHDocVw.InternetExplorer、SHDocVw.ShellWindowsClass获取当前打开的google搜索页面的IE窗口句柄；
4. 根据3返回的句柄，获得当前打开的google页面的mshtml.IHTMLDocument2对象；
5. 根据4返回的IHTMLDocument2对象，获得搜索输入框和提交按钮（可查看google页面源文件，确认输入框和提交按钮的类型和名字）；
6. 在搜索输入框中输入要搜索的内容，并执行提交按钮的click动作即可进行搜索；

简单来说：
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);

 

(可以简略点写：object c=null; myWeb.Navigate("http://zhidao.baidu.com/",ref c,ref c,ref c,ref c); )
mshtml.IHTMLDocument2 htmlDoc = webBrowser1.Document as mshtml.IHTMLDocument2;

//...获取WebBroswer中的body代码

mshtml.HTMLDocumentClass doc=(mshtml.HTMLDocumentClass)myWeb.Document;
mshtml.HTMLBody body=(mshtml.HTMLBody)docCC.body;
string html=body.innerHTML.ToString();

 

//...如果里面有Form，要给里面的text填充信息

mshtml.IHTMLDocument2 doc2=(mshtml.IHTMLDocument2)myWeb.Document;
mshtml.IHTMLElementCollection inputs;
inputs=(mshtml.IHTMLElementCollection)doc2.all.tags("INPUT");
mshtml.IHTMLElement element=(mshtml.IHTMLElement)inputs.item("userName",0);
mshtml.IHTMLInputElement inputElement=(mshtml.IHTMLInputElement)element;
inputElement.value="填充信息";

 

//...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();

 

1、根据元素ID获取元素的值。
比如要获取这个标签里的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);
}

 

下面是另外一遍博客里写的比较好的

#region Search 
public static void Search(string searchText) 
{ 
SHDocVw.InternetExplorer ieWnd = GetIEWndOfGoogle(); 
mshtml.IHTMLDocument2 ieDoc = GetIEDocOfGoogle(ref ieWnd); 

System.Diagnostics.Trace.Assert(ieDoc != null); 
SearchTextInGoogle(ieDoc, searchText); 

//activate ie window 
SetForegroundWindow(ieWnd.HWND); 
} 
#endregion 

#region get ie window of google page 
public static SHDocVw.InternetExplorer GetIEWndOfGoogle() 
{ 
mshtml.IHTMLDocument2 ieDoc; 
SHDocVw.InternetExplorer ieWnd = null; 
SHDocVw.ShellWindowsClass shellWindows = new SHDocVw.ShellWindowsClass(); 

foreach (SHDocVw.InternetExplorer ie in shellWindows) 
{ 
//if it is ie window 
if (ie.FullName.ToUpper().IndexOf("IEXPLORE.EXE") > 0) 
{ 
//get the document displayed 
ieDoc = (mshtml.IHTMLDocument2)ie.Document; 
if (ieDoc.title.ToUpper().IndexOf("GOOGLE") >= 0) 
{ 
ieWnd = ie; 
break; 
} 
} 
} 

shellWindows = null; 

return ieWnd; 
} 
#endregion 

#region get ie document of google page 
public static mshtml.IHTMLDocument2 GetIEDocOfGoogle(ref SHDocVw.InternetExplorer ieWnd) 
{ 
object missing = null; 
mshtml.IHTMLDocument2 ieDoc; 

if (ieWnd == null) 
{ 
ieWnd = new SHDocVw.InternetExplorer(); 
ieWnd.Visible = true; 
ieWnd.Navigate("http://www.google.com", ref missing, ref missing, ref missing, ref missing); 

//wait for loading completed, or using DocumentComplete Event 
while (ieWnd.StatusText.IndexOf("完成") == -1) 
Application.DoEvents(); 
} 

ieDoc = (mshtml.IHTMLDocument2)ieWnd.Document; 
return ieDoc; 
} 
#endregion
#region Search the given text in google 
/////
/// search the given text in google home page 
/// we can see the source file of google home page to confirm the elements we need 
/// the html file of google home page is as follows 
/// ... 
///// 
public static void SearchTextInGoogle(mshtml.IHTMLDocument2 ieDoc, string searchText) 
{ 
mshtml.HTMLInputElementClass input; 

//set the text to be searched 
foreach (mshtml.IHTMLElement ieElement in ieDoc.all) 
{ 
//if its tag is input and name is q(question) 
if (ieElement.tagName.ToUpper().Equals("INPUT")) 
{ 
input = ((mshtml.HTMLInputElementClass)ieElement); 
if (input.name == "q") 
{ 
input.value = searchText; 
break; 
} 
} 
} 

//click the submit button to search 
foreach (mshtml.IHTMLElement ieElement in ieDoc.all) 
{ 
//if its tag is input 
if (ieElement.tagName.ToUpper().Equals("INPUT")) 
{ 
input = (mshtml.HTMLInputElementClass)ieElement; 
if (input.name == "btnG") 
{ 
input.click(); 
break; 
} 
} 
} 
} 

　　

#endregion