openid ClaimsResponse always null [SOLVED]

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C#

ASP.NET

I downloaded and tried the code from here[^]. it works.

So I tried the same thing in ASP.Net and sure enough, I get authenticated, but the ClaimsResponse object is always null. (I tried yahoo, google and myopenid)

//both return null
var claimUntrusted = response.GetUntrustedExtension<ClaimsResponse>();
var claim = response.GetExtension<ClaimsResponse>();

I tried to solve this and found various forums mostly StackOverFlow, claiming I should change the web.config file to something like this (tried different variations based on the different responses on the forums):

<configSections>
  <section name="dotNetOpenAuth" type="DotNetOpenAuth.Configuration.DotNetOpenAuthSection" requirePermission="false" allowLocation="true" /> 
</configSections>

  <!-- The following OPTIONAL behavior allows RPs to use SREG only, but be compatible
                        with OPs that use Attribute Exchange (in various formats). -->
  <dotNetOpenAuth>
    <openid>
      <relyingParty>
        <behaviors>
          <add type="DotNetOpenAuth.OpenId.RelyingParty.Behaviors.AXFetchAsSregTransform, DotNetOpenAuth" />
        </behaviors>
      </relyingParty>
    </openid>
  </dotNetOpenAuth>

I compared my solution to the dotnetopenauth website itself: http://www.dotnetopenauth.net/developers/help/programmatic-openid-relying-party/[^], but to no avail.

this is the logon button event handler:

//openid_identifier provides the identifier string depending on yahoo ("http://yahoo.com/"), google ("https://www.google.com/accounts/o8/id") or myopenid ("http://{identifier}.myopenid.com/")
private void Logon(string openid_identifier)
 {
     OpenIdRelyingParty oidrp = new OpenIdRelyingParty();
     IAuthenticationRequest request = oidrp.CreateRequest(Identifier.Parse(openid_identifier));

    //tried the FetchRequest solution as well, didn't work.

     ClaimsRequest cr = new ClaimsRequest();
     cr.Email = DemandLevel.Require;
     cr.FullName = DemandLevel.Require;
     cr.Country = DemandLevel.Require;
     request.AddExtension(cr);


     request.RedirectToProvider();
 }

Hope someone has an idea.
thanks.

[UPDATE]
It is working with myopenid. Google and yahoo still return null.
[/UPDATE]

[UPDATE #2]
This was not really straightforward.
Here's the basic solution:

private void Logon(string openid_identifier, PROVIDER provider)
 {
     Session["provider"] = provider;
     IAuthenticationRequest request = openid.CreateRequest(Identifier.Parse(openid_identifier));
     if (provider == PROVIDER.myopenid) {
         ClaimsRequest cr = new ClaimsRequest();
         cr.Email = DemandLevel.Require;
         cr.FullName = DemandLevel.Require;
         cr.Country = DemandLevel.Request;
         cr.BirthDate = DemandLevel.Request;
         cr.Gender = DemandLevel.Request;
         cr.Language = DemandLevel.Request;
         cr.Nickname = DemandLevel.Request;
         cr.PostalCode = DemandLevel.Request;
         cr.TimeZone = DemandLevel.Request;

         request.AddExtension(cr);
     }
     else {
         FetchRequest fr = new FetchRequest();
         fr.Attributes.AddRequired(WellKnownAttributes.Contact.Email);
         fr.Attributes.AddRequired(WellKnownAttributes.Name.FullName);
         fr.Attributes.AddRequired(WellKnownAttributes.Contact.HomeAddress.Country);
         fr.Attributes.AddRequired(WellKnownAttributes.BirthDate.WholeBirthDate);
         fr.Attributes.AddRequired(WellKnownAttributes.Preferences.Language);
         fr.Attributes.AddRequired(WellKnownAttributes.Person.Gender);
         fr.Attributes.AddRequired(WellKnownAttributes.Name.Alias);
         fr.Attributes.AddRequired(WellKnownAttributes.Preferences.TimeZone);
         fr.Attributes.AddRequired(WellKnownAttributes.Contact.HomeAddress.PostalCode);
         request.AddExtension(fr);
     }


     request.RedirectToProvider();
 }

that's right, this is dependent on the provider you want to talk to. Moreover you need to add "using DotNetOpenAuth.OpenId.Extensions.AttributeExchange;" on TOP of the page. If you want to use DotNetOpenAuth.OpenId.Extensions.AttributeExchange.FetchRequest fr = new DotNetOpenAuth.OpenId.Extensions.AttributeExchange.FetchRequest(); you don't get the AddRequired method in intellisense.

I keep the provider option in sesion so when the login comes back I know what object to talk too. (ClaimsResponse or FetchResponse)
[/UPDATE #2]