Is there something for Vusual Basic ?

[clementmarcotte]

It seems your SDK don't like VB. So VB programmers are just an annoyance for you.

[Scottj1s]

@clementmarcotte all Windows App SDK components provide managed projection assemblies for .NET use. Do you have a sample project you can provide?

[castorix]

It seems your SDK don't like VB. So VB programmers are just an annoyance for you.

I could compile and run a VB WindowsAppSDK project by adapting a C# project, but without XAML, which is not great
When I use XAML, I get :
_App.g.i.vb(35,2): error BC30560: 'DesignerGeneratedAttribute' is ambiguous in the namespace 'Microsoft.VisualBasic.CompilerServices'.

As DesignerGenerated is in the generated code :

<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()>  _
Partial Class App

I don't see how I could fix this problem...

[castorix]

Finally I used Markup.XamlReader.Load to load XAML with Reflection.Assembly.GetManifestResourceStream as Microsoft.UI.Xaml.Application.LoadComponent does not seem to work
and WindowsAppSDK works fine with VB

[castorix]

But there is still a problem
I cannot use XamlControlsResources in VB.NET
This, which works in C#, crashes in VB.NET :
Dim x As XamlControlsResources = New XamlControlsResources()
which prevents to use controls like RatingControl or TeachingTip

But MS does not care anymore about VB.NET now...

[pkar70]

I also tried to marry VB with WindowsAppSDK.

1. Create new project: blank app, packaged, WinUI3 desktop, exit VStudio
2. Changes in *sln file

• Project("{F184B08F-C81C-45F6-A57F-5ABD9991F28F}") .... (change in GUID)
• and csproj to vbproj

4. in project folder

• rename all *cs files to *vb (and translate content, you can remove all )
• rename csproj to vbproj

App.xaml.vb would be:

Namespace YOURNAMESPACE
    ''' <summary>
    ''' Provides application-specific behavior to supplement the default Application class.
    ''' </summary>
    Partial Public Class App
        Inherits Microsoft.UI.Xaml.Application

        ''' <summary>
        ''' Initializes the singleton application object.  This Is the first line of authored code
        ''' executed, And as such Is the logical equivalent of main() Or WinMain().
        ''' </summary>
        Public Sub New()
            ' MyBase.InitializeComponent
        End Sub

        ''' <summary>
        ''' Invoked when the application Is launched normally by the end user.  Other entry points
        ''' will be used such as when the application Is launched to open a specific file.
        ''' </summary>
        ''' <param name="args">Details about the launch request And process.</param>
        Protected Overrides Sub OnLaunched(args As Microsoft.UI.Xaml.LaunchActivatedEventArgs)
            m_window = New MainWindow()
            m_window.Activate()
        End Sub

        Private m_window As Microsoft.UI.Xaml.Window
    End Class
End Namespace

MainWindow.xaml.vb would be

Partial Public Class MainWindow
    Inherits Microsoft.UI.Xaml.Window

        Public Sub New()
            ' MyBase.InitializeComponent
        End Sub

    Private Sub myButton_Click(sender As Object, e As Microsoft.UI.Xaml.RoutedEventArgs)
        ' myButton.Content = "Clicked"
    End Sub
End Class

Seems fine, but compiler complains:

  Using "Vbc" task from assembly "C:\Users\pkar\.nuget\packages\microsoft.net.compilers.toolset\4.2.0-2.final\build\..\tasks\net472\Microsoft.Build.Tasks.CodeAnalysis.dll".
  Task "Vbc"
    Task Parameter:
        References=
            C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref\net6.0\Microsoft.CSharp.dll
                    (... file metadata removed ...)
            C:\Users\pkar\.nuget\packages\microsoft.windowsappsdk\1.0.2\lib\net5.0-windows10.0.18362.0\Microsoft.InteractiveExperiences.Projection.dll
                    (... file metadata removed ...)
            C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref\net6.0\Microsoft.VisualBasic.Core.dll
                    AssemblyVersion=11.0.0.0
                    CopyLocal=false
                    ExternallyResolved=true
                    FileVersion=11.100.422.16404
                    FrameworkReferenceName=Microsoft.NETCore.App
                    FrameworkReferenceVersion=6.0.4
                    FusionName=Microsoft.VisualBasic.Core, Version=11.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
                    ImageRuntime=v4.0.30319
                    NuGetPackageId=Microsoft.NETCore.App.Ref
                    NuGetPackageVersion=6.0.4
                    OriginalItemSpec=C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref/net6.0/Microsoft.VisualBasic.Core.dll
                    Private=false
                    PublicKeyToken=b03f5f7f11d50a3a
                    ReferenceSourceTarget=ResolveAssemblyReference
                    ResolvedFrom={RawFileName}
                    Version=
            C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref\net6.0\Microsoft.VisualBasic.dll
                    AssemblyVersion=10.0.0.0
                    CopyLocal=false
                    ExternallyResolved=true
                    FileVersion=6.0.422.16404
                    FrameworkReferenceName=Microsoft.NETCore.App
                    FrameworkReferenceVersion=6.0.4
                    FusionName=Microsoft.VisualBasic, Version=10.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a
                    ImageRuntime=v4.0.30319
                    NuGetPackageId=Microsoft.NETCore.App.Ref
                    NuGetPackageVersion=6.0.4
                    OriginalItemSpec=C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref/net6.0/Microsoft.VisualBasic.dll
                    Private=false
                    PublicKeyToken=b03f5f7f11d50a3a
                    ReferenceSourceTarget=ResolveAssemblyReference
                    ResolvedFrom={RawFileName}
                    Version=
            C:\Program Files\dotnet\packs\Microsoft.NETCore.App.Ref\6.0.4\ref\net6.0\Microsoft.Win32.Primitives.dll
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                    (... file metadata removed ...)
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                    (... file metadata removed ...)
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                    (... file metadata removed ...)
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                    (... file metadata removed ...)
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    Task Parameter:PreferredUILang=en-US
    Task Parameter:Prefer32Bit=False
    Task Parameter:NoStandardLib=True
    Task Parameter:
        Imports=
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    Task Parameter:
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/debug:portable /filealign:512 /optimize- /out:obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\intermediatexaml\WinUI3desktopApp.dll /subsystemversion:6.00 /target:winexe /warnaserror- /utf8output /analyzerconfig:obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\WinUI3desktopApp.GeneratedMSBuildEditorConfig.editorconfig /analyzer:"C:\Program Files\dotnet\sdk\6.0.104\Sdks\Microsoft.NET.Sdk\targets\..\analyzers\Microsoft.CodeAnalysis.VisualBasic.NetAnalyzers.dll" /analyzer:"C:\Program Files\dotnet\sdk\6.0.104\Sdks\Microsoft.NET.Sdk\targets\..\analyzers\Microsoft.CodeAnalysis.NetAnalyzers.dll" App.xaml.vb MainWindow.xaml.vb H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\App.g.i.vb H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\App.g.vb H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\MainWindow.g.i.vb H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\MainWindow.g.vb H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\XamlTypeInfo.g.vb /warnaserror+:NU1605
    Microsoft (R) Visual Basic Compiler version 4.2.0-2.22158.15 (be223bbc)
    Copyright (C) Microsoft Corporation. All rights reserved.

    H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\App.g.i.vb(35,2): error BC30560: 'DesignerGeneratedAttribute' is ambiguous in the namespace 'Microsoft.VisualBasic.CompilerServices'.

    <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()>  _
     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\MainWindow.g.i.vb(17,6): error BC30560: 'DesignerGeneratedAttribute' is ambiguous in the namespace 'Microsoft.VisualBasic.CompilerServices'.

        <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()>  _
         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    CompilerServer: server - server processed compilation - e7204dbd-aaed-4da0-a4ba-b890494b5d09
  Done executing task "Vbc" -- FAILED.

You can manually edit *g.i.vb files, to remove <Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _. Now, build is successful. But we got runtime exception:

System.Reflection.TargetInvocationException
  HResult=0x80131604
  Message=Exception has been thrown by the target of an invocation.
  Source=System.Private.CoreLib
  StackTrace:
   at System.RuntimeType.CreateInstanceOfT()
   at System.Activator.CreateInstance[T]()
   at WinRT.WeakLazy`1.get_Value()
   at Microsoft.UI.Xaml.Application._IApplicationStatics.get_Instance()
   at Microsoft.UI.Xaml.Application.Start(ApplicationInitializationCallback callback)
   at WinUI3desktopApp.Program.Main(String[] args) in H:\Home\PIOTR\VStudio\_Vs2017\testonly\WinUI3desktopApp\obj\x86\Debug\net6.0-windows10.0.19041\win10-x86\App.g.i.vb:line 23

  This exception was originally thrown at this call stack:
    WinRT.BaseActivationFactory.BaseActivationFactory(string, string)
    Microsoft.UI.Xaml.Application._IApplicationStatics._IApplicationStatics()

Inner Exception 1:
COMException: Class not registered (0x80040154 (REGDB_E_CLASSNOTREG))

in this file:

'------------------------------------------------------------------------------
' <auto-generated>
'     This code was generated by a tool.
'
'     Changes to this file may cause incorrect behavior and will be lost if
'     the code is regenerated.
' </auto-generated>
'------------------------------------------------------------------------------

Option Strict Off
Option Explicit On

Namespace Global.WinUI3desktopApp

#If Not DISABLE_XAML_GENERATED_MAIN Then
Public Class Program

    <MTAThread()> _
    <Global.System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.UI.Xaml.Markup.Compiler", " 1.0.0.0")>  _
    <Global.System.Diagnostics.DebuggerNonUserCodeAttribute()>  _
    Shared Sub Main(ByVal args() As String)
        Global.Microsoft.UI.Xaml.Application.Start(Function(p) New Global.WinUI3desktopApp.App()) ' <-- exception here
    End Sub

    <Global.System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.UI.Xaml.Markup.Compiler", " 1.0.0.0")>  _
    <Global.System.Diagnostics.DebuggerNonUserCodeAttribute()>  _
    Sub Program
    End Sub

End Class
#End If


Partial Class App
    Inherits Global.Microsoft.UI.Xaml.Application

    <Global.System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.UI.Xaml.Markup.Compiler", " 1.0.0.0")>  _
    Private _contentLoaded As Boolean
    <Global.System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.UI.Xaml.Markup.Compiler", " 1.0.0.0")>  _
    <Global.System.Diagnostics.DebuggerNonUserCodeAttribute()>  _
    Public Sub InitializeComponent()
        If _contentLoaded Then
            Return
        End If
        _contentLoaded = true

        Dim resourceLocator As New Global.System.Uri("ms-appx:///App.xaml")
        Global.Microsoft.UI.Xaml.Application.LoadComponent(Me, resourceLocator)

#If Debug AndAlso Not DISABLE_XAML_GENERATED_BINDING_DEBUG_OUTPUT Then
        AddHandler Me.DebugSettings.BindingFailed,
            Sub(Sender As Global.System.Object, bindingFailedArgs As Global.Microsoft.UI.Xaml.BindingFailedEventArgs)
                Global.System.Diagnostics.Debug.WriteLine(bindingFailedArgs.Message)
            End Sub
#End If

#If Debug AndAlso Not DISABLE_XAML_GENERATED_BREAK_ON_UNHANDLED_EXCEPTION Then
        AddHandler Me.UnhandledException,
            Sub(sender As Global.System.Object, unhandledExceptionArgs As Global.Microsoft.UI.Xaml.UnhandledExceptionEventArgs)
                If Global.System.Diagnostics.Debugger.IsAttached Then
                    Global.System.Diagnostics.Debugger.Break()
                End If
            End Sub
#End If
    End Sub

End Class

End Namespace

So, first we have problems with
https://docs.microsoft.com/en-us/dotnet/api/microsoft.visualbasic.compilerservices.designergeneratedattribute?view=net-6.0
(ambiguous? but between what? Also, when I start typing <Global.Microsoft.VisualBasic.CompilerServices., I don't have any item starting from 'D' available (in IntelliSense).

And second problem, related to registration of App.

If someone would have more data/details available about this issue, please post it here.