I have been successfully using NHibernate in ASP.Net projects by instantiating a SessionFactory as a static in global.asax, and binding it via NHibernate.Context.CurrentSessionContext. I am trying to use the same method in a WCF web service, but I keep getting "An item with the same key has already been added" exceptions - caused by the fact that it keeps trying to build a new session factory for each service call (I think). WCF and silverlight are new to me, and I am "learning by blog" and am lost. Many posts describe ways to transmit domain objects down the wire, but I don't want to do that - I am using DTOs. Many blog posts show injecting ISession in ways that are beyond my current grasp. I really need a simple silverlight / wcf project that shows how to manage the ISessionFactory and ISession in WCF without a lot of window dressing. I am surprised at how much trouble this is - at least for me. I am hopeful to get some guidance from this group.
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