How to parse HTML page data in Windows Phone 7?

I want to do the below two tasks In Windows Phone 7 application.

1.Navigate to a web page (e.g.http://www.FlightsInd.com) and get the HTML page data.I wnat to ensure that all the Document data is completely downloaded.

In C#.Net i am doing this using below code:

WebBrowser objWB = new WebBrowser();
webBrowser1.DocumentCompleted += new WebBrowserDocumentCompletedEventHandler(webBrowser1_DocumentCompleted);
objWB.Navigate("http://www.FlightsInd.com")

here once the DocumentCompleted event is fired it means all the data in that request is downloaded.

2.Parse HTML page elements data.

In C#.Net i am doing this using below code.

       doc = webBrowser1.Document;
       btnElem = doc.GetElementById(streleid);

Can anyody help me with the equivalent classes/code for the above two implementations ?

Use WebBrowser Windows Phone control

To Navigate to your page

browser.Navigate(new Uri("http://www.FlightsInd.com"));

To understand that navigation completed and content is loaded

WebBrowser.Navigated Event

WebBrowser.LoadCompleted Event - Occurs after the WebBrowser control has loaded content.

WebBrowser.NavigationFailed Event - to track navigation failures

The WebBrowser class events are raised in the following order: Navigating, Navigated, and LoadCompleted.

To get Html source

WebBrowser Windows Phone control contains special function to save the source for the HTML content currently displayed in WebBrowser control as a string:

string html = browser.SaveToString();

To parse Html

Look at HTML Agility Pack

What is the best way to parse html in C#?

Parsing HTML String

PS. Alternatively you can use webBrowser.InvokeScript (C#) with combination of js eval to invoke any js command which can use window.external.notify inside it to pass results back to C#.