title: How to use DotNetOpenAuth to retrieve emailId of the google users
body: <p>I am trying to use <strong>DotNetOpenAuthto</strong> authenticated user which I am able to do. But I am not able to figure out a way to get additional parameters like <strong>email, firstname, lastname</strong> etc which are provided by the google.</p>
  
  <p>The code snippet which I am using is:</p>
  
  <pre><code>&lt;%@ Register Assembly="DotNetOpenAuth" Namespace="DotNetOpenAuth.OpenId.RelyingParty" TagPrefix="rp" %&gt;
  </code></pre>
  
  <p>...............................</p>
  
  <pre><code>&lt;rp:OpenIdButton runat="server" ID="OpenIdTextButton1"
      OnLoggedIn="OpenIdTextBox1_LoggedIn"
      Text="aaaa"
      Identifier="https://www.google.com/accounts/o8/id" 
      /&gt;
  </code></pre>