Overview

This PR migrates the .NET SDK from WiX 3.14 to using 5.0.2. The package used is different from the public toolset and built from source.

Changes

• Add separate SDK style projects for each installer: CLI, templates, and Visual Studio placeholder and standalone bundle.
• Add .wixproj files as ProjectReferences to dotnet-sdk.proj and assign an Idle target. This allows the projects to participate in restore operations, but avoids being built as an actual reference. The projects depend on various values that are unavailable when project references are resolved.
• Convert .wxl files to the v4 schema
• Delete all the generate*.ps1 scripts that previously invoked Candle and Light. These tools no longer exist in v5.
• Generate a PackageGroup for MSIs to chain into the SDK bundle. This avoids repeating the same authoring and simplifies adding additional MSI packages in the future (assuming they follow the same pattern).
• Bundles will now match the target architecture. In v3, bundles were always 32-bit applications. This should be documented as a potential breaking change since detection logic will need to search under both registry views.

UI changes

• Bundle theme file updated to use system colors. These colors automatically adjust when using high contrast display themes.
• Replace old msi.ico with .NET icon.
• Page authoring updated with conditional text based off WixBundleAction.
• Fix tab order for Hypertext elements. Only one link per control to ensure tab order is consistent.
• Cleaned up alignment.
• Renamed font IDs.
• Cleaned up the help page and added instructions for using lang option.
• Added text for the Modify page.

Finalizer

• The finalizer has been updated to consume the WixBundleAction variable (See the ExePackage authoring for more details).
• For installs, the ExePackage is detected as installed and planning will skip executing it (Execute is set to None)

[1560:1F64][2025-06-19T13:06:30]i201: Planned package: Finalizer, state: Present, 
default requested: Present, ba requested: Present, execute: None, 
rollback: None, default cache strategy: Keep, ba requested strategy: Keep, cache: Vital, uncache: No, dependency: None, expected install registration state: Present, expected cache registration state: Present

• Repairs will detect it as installed, but the finalizer will exit early

[0CCC:0001][2025-06-19T13:08:47] Finalizer: logPath: C:\Users\WDAGUtilityAccount\AppData\Local\Temp\Microsoft_.NET_SDK_10.0.100-dev_(x64)_20250619130825_000_Finalizer.log
[0CCC:0001][2025-06-19T13:08:47] Finalizer: sdkVersion: 10.0.100-dev
[0CCC:0001][2025-06-19T13:08:47] Finalizer: platform: x64
[0CCC:0001][2025-06-19T13:08:47] Finalizer: bundleAction: 8

• Uninstall will always execute it.

TODO:

Missing localization strings:

[047C:1328][2025-06-20T14:01:14]i000: WIXSTDBA: Missing loc string '#(loc.FilesInUseTitle)'.
[047C:1328][2025-06-20T14:01:14]i000: WIXSTDBA: Missing loc string '#(loc.FilesInUseRetryButton)'.
[047C:1328][2025-06-20T14:01:14]i000: WIXSTDBA: Missing loc string '#(loc.FilesInUseIgnoreButton)'.
[047C:1328][2025-06-20T14:01:14]i000: WIXSTDBA: Missing loc string '#(loc.FilesInUseExitButton)'.
[047C:1328][2025-06-20T14:01:14]i000: WIXSTDBA: Missing loc string '#(loc.FilesInUseNetfxCloseRadioButton)'.