Obsolete TextType.Html for .NET 10

[jfversluis]

Note

Are you waiting for the changes in this PR to be merged?
It would be very helpful if you could test the resulting artifacts from this PR and let us know in a comment if this change resolves your issue. Thank you!

Description of Change

• Adds the Obsolete attribute to the TextType.Html property in the Label class to mark it as obsolete.
• Suppress the build warnings/errors for usages of this in our own codebase

The HTML text type is a headache. Different platforms support different things, and its not very stable across all platforms. If (note: if) we would want to keep this, I would want to move this into its own control and not combine it with the regular Label. Or we might just get rid of this entirely.

Q: Should we then also obsolete the Label.TextType property? Since it has no use if we remove the HTML option.

(Mostly a proposal at this point, but might become a real thing...)

[dotnet-policy-service]

🚨 API change(s) detected @davidbritch FYI

[dotnet-policy-service]

🚨 API change(s) detected @davidortinau @rachelkang FYI

[Copilot]

Pull Request Overview

This PR marks the TextType.Html enum member as obsolete and suppresses the resulting compiler warnings across the codebase.

• Adds [Obsolete] attribute to TextType.Html in TextType.cs
• Wraps usages of TextType.Html in #pragma warning disable/restore to keep builds warning-free
• Updates various test and platform extension files to suppress CS0612 warnings

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
src/Core/tests/DeviceTests/Handlers/Label/LabelHandlerTests.cs	Suppress obsolete warning in handler test
src/Core/src/Primitives/TextType.cs	Mark TextType.Html as obsolete
src/Controls/tests/TestCases.HostApp/Issues/XFIssue/LabelTextType.cs	Suppress obsolete warning in HostApp test
src/Controls/tests/TestCases.HostApp/Issues/Issue8870.cs	Suppress obsolete warning in HostApp test
src/Controls/tests/TestCases.HostApp/Issues/Issue21711.cs	Suppress obsolete warning in HostApp test
src/Controls/tests/TestCases.HostApp/Issues/CarouselViewSetOrientation.cs	Suppress obsolete warning in HostApp test
src/Controls/tests/TestCases.HostApp/Elements/LabelCoreGalleryPage.cs	Suppress obsolete warning in gallery page
src/Controls/tests/DeviceTests/Elements/Label/LabelTests.iOS.cs	Suppress obsolete warning in iOS device test
src/Controls/tests/DeviceTests/Elements/Label/LabelTests.cs	Suppress obsolete warning in device test
src/Controls/tests/DeviceTests/Elements/Label/LabelTests.Android.cs	Suppress obsolete warning in Android device test
src/Controls/src/Core/Platform/iOS/Extensions/LabelExtensions.cs	Suppress obsolete warning in iOS extension
src/Controls/src/Core/Platform/iOS/Extensions/FormattedStringExtensions.cs	Suppress obsolete warning in formatted-string extension
src/Controls/src/Core/Platform/Android/Extensions/TextViewExtensions.cs	Suppress obsolete warning in Android extension
src/Controls/src/Core/Label/Label.iOS.cs	Suppress obsolete warning in iOS mapper

[Copilot]

[nitpick] The inline #pragma warning directives add clutter to test code; consider using a global suppression file (e.g., GlobalSuppressions.cs) to clean up repeated suppressions.

[mattleibow]

I would also obsolete the TextType.

We probably can use some converter for the HTML to FormattedString or Markdown to FormattedString. This could live in the MCT.

[jsuarezruiz]

Pending changes in LabelExtensions:

C:\a\_work\1\s\src\Compatibility\Core\src\iOS\Extensions\LabelExtensions.cs(28,28): error CS0612: 'TextType.Html' is obsolete [C:\a\_work\1\s\src\Compatibility\Core\src\Compatibility.csproj::TargetFramework=net10.0-maccatalyst18.4]
C:\a\_work\1\s\src\Controls\src\Core\Platform\Windows\Extensions\TextBlockExtensions.cs(29,10): error CS0612: 'TextType.Html' is obsolete [C:\a\_work\1\s\src\Controls\src\Core\Controls.Core.csproj::TargetFramework=net10.0-windows10.0.19041.0]
C:\a\_work\1\s\src\Compatibility\Core\src\iOS\Extensions\LabelExtensions.cs(28,28): error CS0612: 'TextType.Html' is obsolete [C:\a\_work\1\s\src\Compatibility\Core\src\Compatibility.csproj::TargetFramework=net10.0-ios18.4]
C:\Users\cloudtest\.nuget\packages\microsoft.windowsappsdk\1.7.250401001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.interop.targets(845,9): error MSB3073: The command ""C:\Users\cloudtest\.nuget\packages\microsoft.windowsappsdk\1.7.250401001\buildTransitive\..\tools\net6.0\..\net472\XamlCompiler.exe" "C:\a\_work\1\s\artifacts\obj\Controls.Core\Release\net10.0-windows10.0.19041.0\\input.json" "C:\a\_work\1\s\artifacts\obj\Controls.Core\Release\net10.0-windows10.0.19041.0\\output.json"" exited with code 1. [C:\a\_work\1\s\src\Controls\src\Core\Controls.Core.csproj::TargetFramework=net10.0-windows10.0.19041.0]
C:\a\_work\1\s\src\Controls\src\Core\Platform\Windows\Extensions\TextBlockExtensions.cs(29,10): error CS0612: 'TextType.Html' is obsolete [C:\a\_work\1\s\src\Controls\src\Core\Controls.Core.csproj::TargetFramework=net10.0-windows10.0.20348.0]
C:\Users\cloudtest\.nuget\packages\microsoft.windowsappsdk\1.7.250401001\buildTransitive\Microsoft.UI.Xaml.Markup.Compiler.interop.targets(845,9): error MSB3073: The command ""C:\Users\cloudtest\.nuget\packages\microsoft.windowsappsdk\1.7.250401001\buildTransitive\..\tools\net6.0\..\net472\XamlCompiler.exe" "C:\a\_work\1\s\artifacts\obj\Controls.Core\Release\net10.0-windows10.0.20348.0\\input.json" "C:\a\_work\1\s\artifacts\obj\Controls.Core\Release\net10.0-windows10.0.20348.0\\output.json"" exited with code 1. [C:\a\_work\1\s\src\Controls\src\Core\Controls.Core.csproj::TargetFramework=net10.0-windows10.0.20348.0]
    6 Error(s)

[PureWeen]

@jfversluis can you review through a set of open issues and determine out many of them can be solved by WebView and get a sense of how disruptive this might be.

[jfversluis]

Lets do this at a later stage