Redesign Visual Studio .NET MAUI Project Property Editor to show actual conditions rather than tick boxes

[janne-hmp]

Visual Studio 17.10.0 Preview 2's MAUI Project Property Editor is pretty hopeless. Currently, it does not recognize almost any conditions written in the project property file, and even is a bit bugged with writing some potentially non-functioning conditions of the style Condition="'$(Configuration)|$(TargetFramework)|$(Platform)'=='Debug|net9.0-ios|AnyCPU' where $(Platform) in fact may not work (perhaps is null?).

It would be much better if for each item in the property editor, instead of just having a simple tick box, the editor would scan the project property file and list each of the conditions it finds for that item, including no condition (applies always). Then you could click on the condition, and perhaps change the value in the project property file under that condition (almost like directly, a bit like search text functionality in VS). And if the entry would not exist, the editor would show what it would be adding to the project file, a bit like in Git Changes. It could even suggest typical conditions that people use such as:

• Condition="'$(Configuration)|$(TargetFramework)'=='Debug|net9.0-ios'
• Condition="$([MSBuild]::IsOSPlatform('windows'))"
• Condition="$([MSBuild]::GetTargetPlatformIdentifier('$(TargetFramework)')) == 'ios'"
• Condition="$(TargetFramework.Contains('-android'))"
• Condition="'$(TargetFramework)'=='net9.0-ios' or '$(TargetFramework)'=='net9.0-maccatalyst'"

Finally, the editor could run some summaries what the conditions mean in terms of various platforms, and also present default values if some relevant platform is not covered by the conditions.