Auto click button and auto fill form- c#

This tutorial will show you how to auto fill forms and click buttons in a website using the web Browser control.
To show you how autoclick/autofill works we’ll make a simple login page.

So let’s begin…
First of all, add a webBrowser control to your form.
Then add a button control to your form and call the web page in the button_click event.

   private void btnSubmit_Click(object sender, EventArgs e)

        {

            webBrowser1.Navigate(URL);

        }

After that add DoucmentComplete event for the web Browser . DocumentComplete event is fired when the page is loaded completely.

Use this code:

private void webBrowserLogin_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)

      {

 webBrowser1.Document.GetElementById("Username").SetAttribute("value", "TEST");

 webBrowser1.Document.GetElementById("password").SetAttribute("value", "TEST1234");

 webBrowser1.Document.GetElementById("Submit").InvokeMember("click");

}

Click the button using tag name and Attributename

HtmlElementCollection ElementCollection = webBrowserWCS.Document.GetElementsByTagName("input");

 foreach (HtmlElement curElement in ElementCollection)

   {

     string Attributename= "";

     iFoundIt = curElement.GetAttribute("value");

     if (Attributename == "Submit Details")

         {

          curElement.InvokeMember("click");

         }

   }