CommunityToolkit
ObservablePropertyAttribute on a field: avoid CS0169?
I made a simple INPC property like so:
[ObservableProperty]
private bool _IsReadOnly;
As expected, I can now bind to IsReadOnly in XAML. Great! However, VS now shows me a warning:
Severity Code Description Project File Line Category Suppression State
Warning CS0169 The field 'MyViewModel._IsReadOnly' is never used MyProject MyViewModel.cs 148 Build Active
Makes sense; it doesn't understand that the field exists only for the generated code. However:
- is that the expected behavior?
- even if I wrap the field in
#warning pragma disable CS0169, the warning doesn't go away. Am I missing something?
(Hm, maybe https://github.com/CommunityToolkit/dotnet is the more appropriate repo? Not sure.)
Mmh is your code actually compiling? That field name is incorrect, as it starts with an uppercase character 🤔
Mmh is your code actually compiling? That field name is incorrect, as it starts with an uppercase character 🤔
I tried with the variants isReadyOnly and _isReadOnly as well. In all three cases, the generated code looks correct; both its set and get point to my field.
So I don't think that's the issue.
However, my use of the .NET 5 SDK (due to some regressions in 6.0) could be it?
{
"sdk": {
"version": "5.0.400"
}
}
@chucker which version of the MVVM package are you using? If it's 8.0, I'm pretty sure you have to be building with .NET 6.
It is indeed 8.0. Other than the compiler warning, it seems to work fine (at least for [ObservableProperty]).
If someone can confirm that this is indeed a known issue in the .NET 5 SDK, then fair enough.
Couldn't repro this, but I've added one more unit test to cover this too in a PR. Thank you! 🙂