Extract Email addresses from given web url

By Sat Sat

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In this Beginners article we will see how simple it is to extract an email addresses from web page. for demo purpose We will extract all emails from URL:// http://eggheadcafe.com/aboutus.aspx Here we will use Email validation regular expression. You can develop your own regular field validation expressions using Free Expresso tool Link to download expresso tool for to Learn regualr field expressions in 60min. http://www.ultrapico.com/Expresso.htm

Here is this line of code

protected

void Button1_Click(object sender, EventArgs e)

{

HttpWebRequest request = (HttpWebRequest)WebRequest.Create("http://nullskull.com/aboutus.aspx"); // Create WebRequest

HttpWebResponse response = (HttpWebResponse)request.GetResponse(); // Initialise the connection

StreamReader reader = new StreamReader(response.GetResponseStream()); // Start receving the Response and store it in to Stream and pass it to Stream reader

string responseText = reader.ReadToEnd();

// Here we will apply regualr expression to responseText

Regex re = new Regex(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*"); //string pattern is Email validation Expressioin

MatchCollection me = re.Matches(responseText);

String str = string.Empty;

foreach(Match m in me)

{

str += m.Value +

" , " ;

}

Response.Write(str);

}

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