Using property injection instead of constructor injection

Question

Long story short, I\'m trying to use ELMAH with MVC 2 and Ninject, and I need to use parameterless constructors. I created an initial post about it here: Using a parameterle

Answer 1

There could be 2 reasons for object reference not set exception.

1) Ninject does not know how to Bind IDepartmentsRepository to a concrete implementation of DepartmentsRepository ( I doubt that is the case though )

2) If you are trying to access DepartmentsRepository property in your controller's constructor, it will throw the exception (since Ninject is only able to inject Property Dependencies after the object is constructed).

Hope that helps.