Question

I am trying to figure out how to click a button on a web page programmatically.

Specifically, I have a WinForm with a WebBrowser control. Once it navigates to the target ASP.NET login page I’m trying to work with, in the DocumentCompleted event handler I have the following coded:

HtmlDocument doc = webBrowser1.Document;  HtmlElement userID = doc.GetElementById('userIDTextBox'); userID.InnerText = 'user1';  HtmlElement password = doc.GetElementById('userPasswordTextBox'); password.InnerText = 'password';  HtmlElement button = doc.GetElementById('logonButton'); button.RaiseEvent('onclick'); 

This fills the userid and password text boxes fine, but I am not having any success getting that darned button to click; I’ve also tried ‘click’, ‘Click’, and ‘onClick’ — what else is there?. A search of msdn of course gives me no clues, nor groups.google.com. I gotta be close. Or maybe not — somebody told me I should call the POST method of the page, but how this is done was not part of the advice given.

BTW The button is coded:

<input type='submit' name='logonButton' value='Login' onclick='if (typeof(Page_ClientValidate) == 'function') Page_ClientValidate(); ' language='javascript' id='logonButton' tabindex='4' /> 

Answer 1

How does this work? Works for me

HtmlDocument doc = webBrowser1.Document;  doc.All['userIDTextBox'].SetAttribute('Value', 'user1'); doc.All['userPasswordTextBox'].SetAttribute('Value', 'Password!'); doc.All['logonButton'].InvokeMember('Click');