C# derived class type needed in base for logging using NLog

I am unfamiliar with NLog but in Log4Net the syntax LogManager.GetLogger(this.GetType()) will accomplish what you want. GetTypereturns the leaf type in your inheritance hierarchy, even if called in the base ApplicationController class, when the logger is first created (ie: on first access to the Logger property) it will instantiate it with type PropertyController

NLog API is slightly different than Log4net. You need to use

Logger = LogManager.GetLogger(GetType().Name);

if you only pass the type, LogManager will expect a logger type (i.e. a custom logger)