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Asked: 2026-05-20T10:57:19+00:00

I need a simple example on how to make one viewmodel update a property

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I need a simple example on how to make one viewmodel update a property on another viewmodel.

Here’ is the situation. I got a view and viewmodel responsable fo displaying a list of albums. I got another view and viewmodel responsable for added a new albums ( couple of textboxes and a button ) now when the new album gets added how do I tell the Collection in the other view that the a new album has been added to it?
I read about frameworks that can do this for me, but Im trying to learn so I won’t use a framework for the being..

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1 Answer

  1. Editorial Team

    There several ways:

    1) AlbumsVM is aware of CreateAlbumVM (for example first opens the second). In this case you can simply add album into AlbumsVM using details provided by CreateAlbumVM
    2) CreateAlbumVM is aware of AlbumsVM. Then it can insert albums into AlbumsVM itself.
    3) AlbumsVM receives albums as ObservableCollection from somewhere. Then CreateAlbumVM can insert new album into original ObservableCollection which will be reflected in AlbumsVM
    4) There is some mediator between these viewModels which provide event AlbumWasAdded.

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