How to use x:SuppressXamlTrimWarnings=True for Binding in AOT?

[aepot]

When I intentionally use Binding in XAML ControlTemplate with WindowsAppSDK

<local:MyControl MyProperty="{Binding MyTemplatedParentProperty, RelativeSource={RelativeSource TemplatedParent}, Converter={StaticResource MyValueConverter}} />

Then I get AOT compilation Warning:

Layout\MyLayout.xaml(127,45): XamlCompiler warning WMC1510: Ensure the property path is trimming and AOT compatible by making use of 'Compiled Bindings (x:bind)' if possible or by specifying the 'x:DataType' directive with the respective binding data context and marking the type declaration with the 'WinRT.GeneratedBindableCustomProperty' attribute or the 'Microsoft.UI.Xaml.Data.Bindable' attribute. If you are unable to do either but can ensure the data type is attributed correctly, then you can also suppress the warning by specifying `x:SuppressXamlTrimWarnings=True` within the closest element. If not, the property path might be trimmed and will not be AOT compatible.

But I can't supress it adding as suggested x:SuppressXamlTrimWarnings=True in anywhere possible place. It just won't compile as SuppressXamlTrimWarnings doesn't exists in Markup at all.

I'm using .NET 8 with WindowsAppSDK 1.8.6 in AOT-compiled Project.

Please help to create the correct markup.

[Mahdi Hosseini (ghost1372)]

Edit Your project csproj file and add a property like:

<NoWarn>WMC1510</NoWarn>

[aepot]

That's makes silence across the entire project but I need it just only for one Control and preserve these warnings for other XAML markup.

[chausner]

See also microsoft/CsWinRT#1932.