Actually, there's a mistake in my aircode.
public class myrowviewmodel()
{
public myrowViewodel( bool isNew = true) {
IsNew = isNew;
}
public bool IsNew {get; set;}
public model{get; set;}
}You want the default to be isnew=true and to set it explicitly false when you load the stuff yourself. That way when the grid automagically creates one then isnew is true. Otherwise you control it. So any edge case you can think of - you control that.
And, of course, you set the isnew false when you commit.
And.... I mean viewmodel.
MVVM:
A window is the view, that binds to a viewmodel call that the windowviewmodel which in this case also has an observablecollection of viewmodels call that type the rowviewmodel. So what that aircode kind of represents is the rowviewmodel.
Another way of putting this is it's whatever type you bind to the ROW in your datagrid.
Exactly how you translate that into the way you're working with mvp and the other stuff, I don't know. I'm assuming you're binding your itemssource to something so you have a collection there and can control what type it's items/rows/whatever are.
