Does IL compiler support .NET Core 3.0 WinForms?

[ghost]

I don't think it's an appropriate question or issue, but I think some one wondering about it.

To test Windows Forms support for .NET Core 3.0, I created a new Windows Forms project with a 3.0.100-alpha1-009616 daily build. Then, I added the package of CoreRT Daily Build 1.0.0-alpha-26921-02 to the project created and published it to win-x64 RID.

As a result, the publish command now fails with the following stack trace results (Please understand that I am using the Korean Windows locale for messages in Korean):

.NET Core용 Microsoft (R) Build Engine 버전 15.9.8-preview+g0a5001fc4d
Copyright (C) Microsoft Corporation. All rights reserved.

  C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj의 패키지를 복원하는 중...
  1.04 sec에서 C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj에 대한 복원을 완료했습니다.
C:\Program Files\dotnet\sdk\3.0.100-alpha1-009616\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(143,5): message NETSDK1057: .NET Core SDK의 미리 보기 버전으로 작업하고 있습니다. 현재 프로젝트의 global.json 파일을 통해 SDK 버전을 정의할 수 있습니다. 자세한 내용은 https://go.microsoft.com/fwlink/?linkid=869452를 참조하세요. [C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj]
  WinFormTest -> C:\Users\rkttu\Projects\WinFormTest\bin\Debug\netcoreapp3.0\win-x64\WinFormTest.dll
  Generating native code
EXEC : error : [TEMPORARY EXCEPTION MESSAGE] InvalidProgramSpecific: Void CorRuntimeHost..ctor() [C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj]
  Internal.TypeSystem.TypeSystemException+InvalidProgramException: [TEMPORARY EXCEPTION MESSAGE] InvalidProgramSpecific: Void CorRuntimeHost..ctor()
     at Internal.TypeSystem.ThrowHelper.ThrowInvalidProgramException(ExceptionStringID id, MethodDesc method)
     at ILCompiler.DependencyAnalysis.RyuJitNodeFactory.CreateMethodEntrypointNode(MethodDesc method)
     at System.Collections.Concurrent.ConcurrentDictionary`2.GetOrAdd(TKey key, Func`2 valueFactory)
     at ILCompiler.DependencyAnalysis.ConstructedEETypeNode.ComputeNonRelocationBasedDependencies(NodeFactory factory)
     at ILCompiler.DependencyAnalysis.ObjectNode.GetStaticDependencies(NodeFactory factory)
     at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.GetStaticDependenciesImpl(DependencyNodeCore`1 node)
     at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.ProcessMarkStack()
     at ILCompiler.DependencyAnalysisFramework.DependencyAnalyzer`2.ComputeMarkedNodes()
     at ILCompiler.RyuJitCompilation.CompileInternal(String outputFile, ObjectDumper dumper)
     at ILCompiler.Compilation.ILCompiler.ICompilation.Compile(String outputFile, ObjectDumper dumper)
     at ILCompiler.Program.Run(String[] args)
     at ILCompiler.Program.Main(String[] args)
C:\Users\rkttu\.nuget\packages\microsoft.dotnet.ilcompiler\1.0.0-alpha-26921-02\build\Microsoft.NETCore.Native.targets(200,5): error MSB3073: ""C:\Users\rkttu\.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\1.0.0-alpha-26921-02\tools\ilc" @"obj\Debug\netcoreapp3.0\win-x64\native\WinFormTest.ilc.rsp"" 명령이 종료되었습니다(코드: 1). [C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj]

And for win-x86, which is a different RID, the following error message is displayed:

.NET Core용 Microsoft (R) Build Engine 버전 15.9.8-preview+g0a5001fc4d
Copyright (C) Microsoft Corporation. All rights reserved.

  C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj의 패키지를 복원하는 중...
  1.26 sec에서 C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj에 대한 복원을 완료했습니다.
C:\Program Files\dotnet\sdk\3.0.100-alpha1-009616\Sdks\Microsoft.NET.Sdk\targets\Microsoft.NET.RuntimeIdentifierInference.targets(143,5): message NETSDK1057: .NET Core SDK의 미리 보기 버전으로 작업하고 있습니다. 현재 프로젝트의 global.json 파일을 통해 SDK 버전을 정의할 수 있습니다. 자세한 내용은 https://go.microsoft.com/fwlink/?linkid=869452를 참조하세요. [C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj]
  WinFormTest -> C:\Users\rkttu\Projects\WinFormTest\bin\Debug\netcoreapp3.0\win-x86\WinFormTest.dll
C:\Users\rkttu\.nuget\packages\microsoft.dotnet.ilcompiler\1.0.0-alpha-26921-02\build\Microsoft.NETCore.Native.Publish.targets(61,5): error : The PrivateSdkAssemblies ItemGroup is required for _ComputeAssembliesToCompileToNative [C:\Users\rkttu\Projects\WinFormTest\WinFormTest.csproj]

It is in the above state.

So, I would like to know the cause of the above error. And I want to know if CoreRT's next preview will support .NET Core 3.0.

[jkotas]

WinForms depends on COM interop. CoreRT does not support COM interop currently. It is tracked by #4219

[DocBrown101]

Is there anything new regarding of .net core 3?

[MichalStrehovsky]

After #7567, very basic WinForms apps will work. One needs to add a <RootAllApplicationAssemblies>false</RootAllApplicationAssemblies> property to the app's csproj file, otherwise we would also try to compile WPF and that's a whole different level.

Also, add <RdXmlFile Include="rd.xml" /> to an ItemGroup in the CSPROJ. The contents of the rd.xml file should be:

<Directives>
    <Application>
        <Assembly Name="System.Drawing.Primitives">
            <Type Name="System.Drawing.KnownColorTable">
                <Method Name="CreateGetter" Dynamic="Required">
                    <GenericArgument Name="Microsoft.Win32.UserPreferenceChangingEventArgs, System" />
                    <GenericArgument Name="Microsoft.Win32.UserPreferenceCategory, System" />
                </Method>
            </Type>
        </Assembly>
    </Application>
</Directives>

This is to make some reflection lightup in System.Drawing to work.

More complex WinForms apps are going to hit missing COM support (#4219), so don't get your hopes too high up.