I have a dll that is referenced by the parent (executing) assembly. In the ApplicationSettings section of the app.config for the parent assembly I have some settings that can be accessed in the normal intellisense manner (e.g. Properties.Settings.Default.SMTPServer).
How do I access these settings from the referenced dll? I obviously can't use intellisense as they are not in the same assembly!
Are you accessing that value from both assemblies?
The dll can have it's own config file and app settings. This starts out as a dll with a config file named after it, but the settings can be moved to the main application as well.
Another approach that I have used is assign the value to an IoC and then read the value out of the Ioc (Ioc == Inversion of Control library). You can do the same thing by assigning the value to a singleton class.
Have you tried saving a .settings file in your DLL project and then using its [] operator to access the property by name?
For example, let's say your DLL have a MySettings.settings file which has nothing in particular in it:
MySettings.Default["SomeSetting"];
(Note, I haven't actually tried this, but after a quick think it seems like it ought to work)
I think a better solution would be to take Chris' advice and use a singleton or IOC mechanism, that way you wouldn't have to sacrifice type safety.