New Fluent Navigation projects have several issues

[hoagsie]

Describe the bug
New projects will not build with (as of writing) the latest VS 2022 (17.3.1)/dotnet 6.0.400 build. This seems to be largely due to a regression in dotnet 6.

https://github.com/dotnet/wpf/issues/6792

There is a workaround outlined here.

https://github.com/dotnet/wpf/issues/6792#issuecomment-1183633402

I see you're already aware of this issue though.

https://github.com/lepoco/wpfui/pull/289

There is one more issue. Microsoft.Toolkit.Mvvm is deprecated in favor of CommunityToolkit.Mvvm. Switching out the packages has some reference issues that are easy to clean up. However, ICommand is no longer available. Doing a nuget search to see where else this could live, I can only find references to the Microsoft.Toolkit.Mvvm package. This will require either a backfill or looking for an alternate solution. I just started using wpfui today so I'm not terribly confident in issuing a PR with either approach. Interestingly, if you install both packages and repoint everything except for ICommand to the new community toolkit the app seems to work fine, but that's an ugly bandaid.

To Reproduce
Steps to reproduce the behavior:

0. Make sure VS version 17.3.1 and dotnet 6.0.400 are installed.
1. Install the WPFUI extension into the VS 2022 installation.
2. Use the Create a new project flow to create a WPF UI - Fluent Navigation project.
3. Try to build.
4. Observe errors.

Expected behavior
New projects should build/run out of the box.

Desktop (please complete the following information):

• OS: Version 10.0.22000 Build 22000 (Windows 11)
• .NET:

  dotnet --list-sdks
  3.1.422 [C:\Program Files\dotnet\sdk]
  5.0.400 [C:\Program Files\dotnet\sdk]
  5.0.408 [C:\Program Files\dotnet\sdk]
  6.0.203 [C:\Program Files\dotnet\sdk]
  6.0.303 [C:\Program Files\dotnet\sdk]
  6.0.400 [C:\Program Files\dotnet\sdk]

• Version: WPF-UI 2.0.2

Additional context

VS info dump

``` Microsoft Visual Studio Community 2022 Version 17.3.1 VisualStudio.17.Release/17.3.1+32811.315 Microsoft .NET Framework Version 4.8.04161 Installed Version: Community Visual C++ 2022 00482-90000-00000-AA942 Microsoft Visual C++ 2022 ASP.NET and Web Tools 17.3.375.53775 ASP.NET and Web Tools Azure App Service Tools v3.0.0 17.3.375.53775 Azure App Service Tools v3.0.0 Azure Functions and Web Jobs Tools 17.3.375.53775 Azure Functions and Web Jobs Tools C# Tools 4.3.0-3.22401.3+41ae77386c335929113f61d6f51f2663d2780443 C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used. CodeMaid 12.0 CodeMaid is an open source Visual Studio extension to cleanup and simplify our C#, C++, F#, VB, PHP, PowerShell, R, JSON, XAML, XML, ASP, HTML, CSS, LESS, SCSS, JavaScript and TypeScript coding. Common Azure Tools 1.10 Provides common services for use by Azure Mobile Services and Microsoft Azure Tools. Cookiecutter 17.0.22179.3 Provides tools for finding, instantiating and customizing templates in cookiecutter format. Extensibility Message Bus 1.2.6 (master@34d6af2) Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration. Microsoft JVM Debugger 1.0 Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines Mono Debugging for Visual Studio 17.3.20 (3f4cb00) Support for debugging Mono processes with Visual Studio. Node.js Tools 1.5.40629.1 Commit Hash:3f5cc0329815af3ffb948f08857446d206a9af36 Adds support for developing and debugging Node.js apps in Visual Studio NuGet Package Manager 6.3.0 NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/ Python - Profiling support 17.0.22179.3 Profiling support for Python projects. Python - VC Project Support 17.0.21344.1 Provides support for launching C++ projects with Python debugging enabled. Python with Pylance 17.0.22179.3 Provides IntelliSense, projects, templates, debugging, interactive windows, and other support for Python developers. Razor (ASP.NET Core) 17.0.0.2232702+e1d654e792aa2fe6646a6935bcca80ff0aff4387 Provides languages services for ASP.NET Core Razor. SQL Server Data Tools 17.0.62207.04100 Microsoft SQL Server Data Tools SVG Viewer 1.0.15 Makes it much easier to work with SVG files by showing a live preview in the bottom-right corner of the code window Syntax Visualizer 1.0 An extension for visualizing Roslyn SyntaxTrees. TypeScript Tools 17.0.10701.2001 TypeScript Tools for Microsoft Visual Studio Visual Basic Tools 4.3.0-3.22401.3+41ae77386c335929113f61d6f51f2663d2780443 Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used. Visual F# Tools 17.1.0-beta.22363.4+1b94f89d4d1f41f20f9be73c76f4b229d4e49078 Microsoft Visual F# Tools Visual Studio IntelliCode 2.2 AI-assisted development for Visual Studio. VisualStudio.DeviceLog 1.0 Information about my package VisualStudio.Mac 1.0 Mac Extension for Visual Studio VSPackage Extension 1.0 VSPackage Visual Studio Extension Detailed Info Xamarin 17.3.0.296 (d17-3@a0ff24b) Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android. Xamarin Designer 17.3.0.208 (remotes/origin/d17-3@e4f67afef) Visual Studio extension to enable Xamarin Designer tools in Visual Studio. Xamarin Templates 17.2.28 (9b3d244) Templates for building iOS, Android, and Windows apps with Xamarin and Xamarin.Forms. Xamarin.Android SDK 13.0.0.0 (d17-3/030cd63) Xamarin.Android Reference Assemblies and MSBuild support. Mono: dffa5ab Java.Interop: xamarin/java.interop/d17-3@7716ae53 SQLite: xamarin/sqlite/3.38.5@df4deab Xamarin.Android Tools: xamarin/xamarin-android-tools/main@14076a6 Xamarin.iOS and Xamarin.Mac SDK 15.12.0.2 (87f98a75e) Xamarin.iOS and Xamarin.Mac Reference Assemblies and MSBuild support. ```

[pomianowski]

Hey, thank you for paying attention to the Microsoft Toolkit depractation. The demo application has already been moved to the Community Toolkit in this commit. The plugin templates were also updated in the same commit.

[hoagsie]

Nice. I look forward to the next release!