Hello everyone,

This is not so much a problem as advice on a best practice really. I am writing an ASP.Net MVC application, and in my DAL i am of course using NHibernate, but what do you do if an exception is thrown in your DAL?

Do you catch the exception in the DAL, log the error and then re-throw the exception?
Do you not even attempt to catch exeptions at all and use the Application_Error() method in the global.asax as a generic catch all?
Do you catch the exception log it and return a bool to the controller indicating a success or failure, or do you do something completly different?

Leading on from this how then do you handle informing the users? Do you show a generic "Error Occured - please try again" type page or do you show a more informative error?