How to make filewatcher application in WPF using MVVM

Question

I want to make a filewatcher application in WPF using MVVM.
This filewatcher will monitor a certain folder.

I can see what my view will be
View : a listbox that contains a list of files that were created

To fill the listbox, I want to use an observable collection.

Where should my filewatcher object be : in the ViewModel or in the model
What should be in the model ?

Answer 1

When using the MVVM pattern you want to separate the code into different roles.
View: Where you will have the presentation for you application which in your case is the .xaml files.
Model: Where you will have the data models and repositories for you application, in your case the what data to observe and how it should be interpreted.
ViewModel: The logic between your View and Model, for example when your collection of data should update in your view or something should happen when you click a button.

You can read more about the MVVM pattern here: https://msdn.microsoft.com/en-us/library/hh848246.aspx

And if you are still lost I recommend that you look up a tutorial and follow it step by step, Good luck! :D

Answer 2

I think I understand the theory. I do find msdn quitte hard to read. But I do have difficulty to use the theory in practice.

If I use a filewatcher object ( system.io ) in my application. Where should this be ?
In my viewmodel because it has events
or
in my model because it describes the data input.

Sorry I am kind of lost.