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I haven't worked in WPF for a long time, but you might try setting a new list (clone the old one and add the new element) instead of adding the element to the existing list: _demo.Value++; var ne...
Answer
#1: Initial revision
by
Alexei
·
2022-03-28T05:07:33Z (over 2 years ago)
I haven't worked in WPF for a long time, but you might try setting a new list (clone the old one and add the new element) instead of adding the element to the existing list:
```c#
_demo.Value++;
var newList = new List(_demo.AllValues);
newList.Add(_demo.Value);
_demo.AllValues = newList;
OnPropertyChanged("Demo");
```
I do not how WPF & MVVCM work internally, but this is a usual patterns in other frameworks such as Angular, mandatory when working with a [Redux-like pattern](https://redux.js.org/faq/immutable-data#what-are-the-benefits-of-immutability) (you never directly mutate the state, but clone in + make changes)