NHibernate.Spatial and Sql 2008 Geography type - How to configure

Question

I am trying to use Nhibernate with the Sql 2008 Geography type and am having difficulty. I am using Fluent Nhibernate to configure which I am fairly new to so that may be th

Answer 1

I know this hardly be useful but in any case. After implementing all lain had said do use in your HQL queries SetParameter third IType parameter. Meaning in

 Hero hero = openSession.Get(3);    
openSession.CreateQuery(
              "from Hero h where NHSP.Distance(h.Location,:thislocation)<1000"
               ).SetParameter("thislocation", hero.Location, new CustomType(typeof(MsSql2008GeographyType), null) ).SetResultTransformer(new DistinctRootEntityResultTransformer())
               .List();

new CustomType(typeof(MsSql2008GeographyType), null) must be passed or you get your all too famililar "System.ArgumentException: 24204".

Just spent whole night figuring that one out.