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Resolving the Croos-Domain Policy issue while accessing WCF Service in a Silverlight Application



While trying to access WCF service into my Silverlight application, i came accross "Cross-Domain" policy issue.




As i'm new to WCF service, i didn't know that an access policy file is required. By default, Silverlight supports calls to Web services on the same domain or site of origin. Same domain means that calls must use the same sub domain, protocol, and port. This is for security reasons and prevents cross-domain forgery.


You can enable Web services to be called by a Silverlight application in another domain by deploying a Web service that uses the correct cross-domain policy file at the root of the domain. You need to add this crossdomain.xml file to the root of IIS hosted service directory.





Read more about Cross-Domain policy here.




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