Hi I have created a dnn module that contains a silverlight project, the silverlight project reqiores access to a WPF web service that is part of another application. I have added the service to the silverlight application however when I load it into my DNN portal I get a message displaying 'error on page', when I try and debug the silverlight project in visula studio I get an error:

An error occurred while trying to make a request to URI 'http://josh-pc/MaxSilver.Services/DashboardInfo.svc'. This could be due to attempting to access a service in a cross-domain way without a proper cross-domain policy in place, or a policy that is unsuitable for SOAP services. You may need to contact the owner of the service to publish a cross-domain policy file and to ensure it allows SOAP-related HTTP headers to be sent. Please see the inner exception for more details.

So I read around and found I need a cliantaccesspolicy.xml file in the web root so for my machine runing the portal nad the services on localhost that is C:\inetpub\wwwroot, so I copied the example one from MSDN site that allows 'The following configuration allows access from any other domain to all resources on the current domain.' The file looks like

<?xml version="1.0" encoding="utf-8"?>
<access-policy>
  <cross-domain-access>
    <policy>
      <allow-from http-request-headers="*">
        <domain uri="*"/>
      </allow-from>
      <grant-to>
        <resource path="/" include-subpaths="true"/>
      </grant-to>
    </policy>
  </cross-domain-access>
</access-policy>

I also added the crossdomain.xml mentioned

<?xml version="1.0"?>
<!DOCTYPE cross-domain-policy SYSTEM "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd">
<cross-domain-policy>
  <allow-http-request-headers-from domain="*" headers="*"/>
</cross-domain-policy>

But even with these files I still get the error stated, I can browse to the service being requested but my silverlight app just cant get to it, and adding the service to the dnn website instead of being a seperate application is not an option for me, can anyone please help me?

My recommendation is to not make cross domain calls. The Silverlight app should just communicate with the domain that launched it. The domain that launches it can then make a call to another domain and pass the information back.

The reason for "locking down the Silverlight app" is that Microsoft does not want Silverlight apps to launch and then start spamming other sites, so those sites must implement the cossdomain policy file.