Common usage examples of C using webbrowser

This article illustrates the common usage of C # using webbrowser. Share it for your reference. The details are as follows:

Judge whether the network is normal or not

private bool IsConnectedToInternet()
{
 int Desc;
 return internet.InternetGetConnectedState(out Desc, 0);
} 

Set the default page:

webBrowser1.Navigate(new Uri("http://www.yoursiteweb.com/copy.aspx"));

Login code:

private void btnlogin_Click(object sender, EventArgs e)
{
 webBrowser1.Document.GetElementById("id").InnerText =txtuser.Text.ToString().Trim();//fill name
 webBrowser1.Document.GetElementById("passwd").InnerText =txtpwd.Text.ToString().Trim();//fill pwd
 HtmlElement formLogin = webBrowser1.Document.Forms["frmLogin"];
 formLogin.InvokeMember("submit");
 Thread.Sleep(5000);
 herfclick("http://www.yoursiteweb.com/upload.aspx");// This is a successful login operation , Jump to //upload.asp
 // Note that you don't jump directly , Simulated click link 
 //SESSION Will not be lost 
 herfclick("http://www.yoursiteweb.com/copy.aspx"); 
}

Simulated click link:

private void herfclick(string url)
{
 for (int i = 0; i < webBrowser1.Document.All.Count; i++)
 {
  if (webBrowser1.Document.All[i].TagName == "A" && webBrowser1.Document.All[i].GetAttribute("href").ToString().Trim() ==url)
  {
   webBrowser1.Document.All[i].InvokeMember("click");// Trigger " CLICK "Events 
   break;
  }
 }
 
}

Run the JS function in the Web page

private void callJsMethod(string jsfun,string jsParameter)
// Function name , Function parameter 
{
 HtmlDocument doc = webBrowser1.Document;
 doc.InvokeScript(jsfun,new object[]{jsParameter});
}

Fill in data:

private void filldate(string txt)
{
 HtmlElement frmWord = webBrowser1.Document.Forms["frmWord"];// Find from
 HtmlElementCollection txtarea = frmWord.GetElementsByTagName("TEXTAREA");
 HtmlElementCollection radio = frmWord.GetElementsByTagName("INPUT");
 radio[2].InvokeMember("click");// Select radio Control 
 txtarea[0].InnerText = txt.ToString();
}

I hope this article is helpful to everyone's C # programming.