How to add empty row and bind it back to VM?

[TakhirMamirov]

I have a datatable binded with the data collection. On the last row click I would like to add empty editable row at the end, populate it and, ideally, my VM should be also automatically updated with that additional object. While I can add an empty row via JS, I can't force linked VM to be updated. Is there any more efficient way to do it?