accessing the controls on a webpage I have just opened - vb.net

I have a piece of code that opens a web page in my default browser (IE10).
Dim url As String
url = "http://www.google.com"
Process.Start(url)
How do I then pass a value to the text box on that page. I am using google as an example. I am using VS2013, VB and asp.net
Thanks

This video should give you all of the information that you need. It is a tutorial on creating an automatic yahoo login from vb, but it will show you how to pass values to a textbox on a webpage, as well as working with other webpage controls.
NOTE: You will need to navigate to the page and view source to get the id of the controls

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MS Access Form with Webbrowser Control Popup New IE Window, Access 2010/VBA

I have struck with one issue not finding any workable solution. Googled a lot without any success…HELP PLEASE.
Situation: Using MS Access 2010, there is one Form with WebBrowser Control (Unbound) for conducting some search, when I click the results of the search a Pop-up new Internet Explorer window opens for the search result.
Requirement: I need “new Internet Explorer window” needs to be opened on existing WebBrowser Control..... NOT to open separately as new pop-up Internet Explorer window.
Kindly provide me solution (MS Access 2010/VBA) or workaround….
Regards,
Sandy
Can you open the form that you are opening in the WebBrowser Control in a new browser window outside of the application in order to test something. Check to see, if when you open the url, and then invoke the search, if the results open in a new window for that browser. If so, then check the target of the form within the first screen to get the name of the window that the page is trying to open the results in. If the target is specified, then you will need to write code to remove it when the page loads.
Just assign the new web address to your webbrowser control. something like this. Note it has to include equal sign and a hyper-link surrounded by quote.
Private Sub WebBrowser34_Click()
Me.WebBrowser34.ControlSource = "='www.google.co.uk'"
End Sub

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The new window opens OK on my IE. But nothing appears when the webbrowser control opens the new window...
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How can I get the pdf document? And why would the new window open but not display the pdf?

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You'll likely have to use the WebBrowser Control's DocumentText Property to get the HTML of the page so that you can parse the required HTTP request required to add the user as a friend. That's likely to be no easy task with YouTube as it will probably be using hidden fields and Javascript (from a separate .js file) to make the request.