Common WCF Exception : Connection Unexpectedly Closed

Question

I have three projects. One is a WCF Services Project, one is a WPF Project, and one is a Microsoft Unit Testing Project. I setup the WCF Services project with a data object th

Answer 1

I've noticed this when using LINQ and calls like Select, Where, etc. without an immediate call to .ToList() or ToArray(). Iterators will get you in trouble. They're not native types that WCF knows how to work with like List, Array, etc. They're of type WhereEnumerable or something. Just keep that in mind when sending back results from NHibernate or Entity Framework. Hope this helps someone. Took me hours to figure out.