How to parse SAML response using C# in .Net 4.0 or .Net 4.5

Hi, In my project we are implementing Single Sign On functionality. The domain credentials will be received through the SAML file and we have to consume/Parse SAML response sent by SSO page using .Net. Does anyone has idea of how to do this ? .Net 4.5 provides some classes to support SAML Response/token.