System.Windows.Forms 的许可错误，版本=6.0.2.0？

Question

I am getting some really weird errors relocating a project over to a new pc. I am using VS 2022 with.NET Core 6. The error on the newer pc is as follows:

LC: error LC0000: 'Could not load file or assembly 'System.Windows.Forms, Version=6.0.2.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or one of its dependencies. Reference assemblies should not be loaded for execution. They can only be loaded in the Reflection-only loader context. (Exception from HRESULT: 0x80131058)'

I thought maybe one of my 3rd party controls could be causing this so I removed ALL of them and I still got the same error.

So I decided on the newer pc to start a new.NET Core 6 project and it compiles and runs just fine with the same System.Windows.Forms reference. I even went into my solution explorer and drilled down into my references to compare the broken project with the fresh brand new one. Both use the same.dll with the versions matching exactly.

I've nuked my bin folder and have tried several other things to no avail. I noticed it says the error is "LC" which I googled and found that has to do with licensing? I don't really have any knowledge on that subject. Has anybody seen this before or knows what could be the underlying issue?

Below is a picture of my do.net --info. The blue screen is the working pc and the black is the non-working..

Thanks

Here is the.vbproj contents of my main project.

<Project Sdk="Microsoft.NET.Sdk">
  <PropertyGroup>
    <TargetFramework>net6.0-windows</TargetFramework>
    <OutputType>WinExe</OutputType>
    <StartupObject>Sub Main</StartupObject>
    <MyType>WindowsForms</MyType>
    <AssemblyVersion>1.0.2202.400</AssemblyVersion>
    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>
    <UseWindowsForms>true</UseWindowsForms>
    <UseWPF>true</UseWPF>
    <ImportWindowsDesktopTargets>true</ImportWindowsDesktopTargets>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
    <DocumentationFile>MyPortal.xml</DocumentationFile>
    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
    <PlatformTarget>x64</PlatformTarget>
    <Prefer32Bit>false</Prefer32Bit>
  </PropertyGroup>
  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
    <DefineDebug>false</DefineDebug>
    <DocumentationFile>MyPortal.xml</DocumentationFile>
    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
  </PropertyGroup>
  <PropertyGroup>
    <ApplicationIcon>MyPortal.ico</ApplicationIcon>
    <ApplicationManifest>app.manifest</ApplicationManifest>
    <Authors></Authors>
    <PackageIcon>MyPortal.png</PackageIcon>
    <PackageIconUrl />
  </PropertyGroup>
  <ItemGroup>
    <Import Include="System.Drawing" />
    <Import Include="System.Windows.Forms" />
  </ItemGroup>
  <ItemGroup>
    <Compile Update="Classes\cls_DoubleBufferedDGV.vb" />
    <Compile Update="Custom Controls\QuestionCheckbox.Designer.vb">
      <DependentUpon>QuestionCheckbox.vb</DependentUpon>
    </Compile>
    <Compile Update="Custom Controls\QuestionCheckbox.vb">
      <SubType>UserControl</SubType>
    </Compile>
    <Compile Update="Custom Controls\QuestionTextbox.Designer.vb">
      <DependentUpon>QuestionTextbox.vb</DependentUpon>
    </Compile>
    <Compile Update="Custom Controls\QuestionTextbox.vb">
      <SubType>UserControl</SubType>
    </Compile>
    <Compile Update="Custom Controls\QuestionYesNo.Designer.vb">
      <DependentUpon>QuestionYesNo.vb</DependentUpon>
    </Compile>
    <Compile Update="Custom Controls\QuestionYesNo.vb">
      <SubType>UserControl</SubType>
    </Compile>
    <Compile Update="Custom Controls\Callout.Designer.vb">
      <DependentUpon>Callout.vb</DependentUpon>
    </Compile>
    <Compile Update="Custom Controls\Callout.vb">
      <SubType>UserControl</SubType>
    </Compile>
    <Compile Update="frm_ExtendAccounts.designer.vb">
      <DependentUpon>frm_ExtendAccounts.vb</DependentUpon>
    </Compile>
    <Compile Update="frm_PhoneNumbers.designer.vb">
      <DependentUpon>frm_PhoneNumbers.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmAuth.designer.vb">
      <DependentUpon>frmAuth.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmListItemEditor.Designer.vb">
      <DependentUpon>frmListItemEditor.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmListItemPicker.Designer.vb">
      <DependentUpon>frmListItemPicker.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmNewQuestion.designer.vb">
      <DependentUpon>frmNewQuestion.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmPleaseWait.designer.vb">
      <DependentUpon>frmPleaseWait.vb</DependentUpon>
    </Compile>
    <Compile Update="frm_Permissions.designer.vb">
      <DependentUpon>frm_Permissions.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmAutoADSearchbox.designer.vb">
      <DependentUpon>frmAutoADSearchbox.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmLists.Designer.vb">
      <DependentUpon>frmLists.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\frmQuestions.designer.vb">
      <DependentUpon>frmQuestions.vb</DependentUpon>
    </Compile>
    <Compile Update="Generic Forms\Inputbox.Designer.vb">
      <DependentUpon>Inputbox.vb</DependentUpon>
    </Compile>
    <Compile Update="My Project\Application.Designer.vb">
      <AutoGen>True</AutoGen>
      <DependentUpon>Application.myapp</DependentUpon>
      <DesignTime>True</DesignTime>
    </Compile>
    <Compile Update="My Project\Resources.Designer.vb">
      <AutoGen>True</AutoGen>
      <DesignTime>True</DesignTime>
      <DependentUpon>Resources.resx</DependentUpon>
    </Compile>
    <Compile Update="My Project\Settings.Designer.vb">
      <AutoGen>True</AutoGen>
      <DependentUpon>Settings.settings</DependentUpon>
      <DesignTimeSharedInput>True</DesignTimeSharedInput>
    </Compile>
    <Compile Update="frm_Splash_Startup.Designer.vb">
      <DependentUpon>frm_Splash_Startup.vb</DependentUpon>
    </Compile>
  </ItemGroup>
  <ItemGroup>
    <EmbeddedResource Include="My Project\licenses.licx" />
  </ItemGroup>
  <ItemGroup>
    <None Update="My Project\Application.myapp">
      <Generator>MyApplicationCodeGenerator</Generator>
      <LastGenOutput>Application.Designer.vb</LastGenOutput>
    </None>
    <None Update="My Project\Settings.settings">
      <Generator>SettingsSingleFileGenerator</Generator>
      <LastGenOutput>Settings.Designer.vb</LastGenOutput>
    </None>
    <None Include="..\.editorconfig" Link=".editorconfig" />
    <None Include="Resources\MyPortal.png">
      <Pack>True</Pack>
      <PackagePath>
      </PackagePath>
    </None>
  </ItemGroup>
  <ItemGroup>
    <Content Include="appsettings.json" />
    <Content Include="MyPortal-Icons\MyPortal.ico" />
    <Content Include="MyPortal-Icons\MyPortal.png" />
    <Content Include="MyPortal-Icons\MyPortal_TestBranch.ico" />
    <Content Include="MyPortal-Icons\MyPortal_TestBranch.png" />
    <Content Include="Notes\Notes.txt" />
    <Content Include="SQL Queries\Create-List-Table.sql" />
    <Content Include="SQL Queries\Create-Templates-Table.sql" />
    <Content Include="SQL Queries\Database Query.sql" />
    <Content Include="SQL Queries\Create-GAMDelegates-Table.sql" />
    <Content Include="SQL Queries\Create-MyPortalPermissions-Table.sql" />
    <Content Include="SQL Queries\Create-UserForms-Table.sql" />
    <None Include="Resources\user %281%29.png" />
    <None Include="Resources\refresh %281%29.png" />
    <Content Include="External Refrences\Interop.ActiveDs.dll" />
    <Content Include="Local Settings\Settings.xml" />
    <Content Include="MyPortal.ico" />
  </ItemGroup>
  <ItemGroup>
    <Analyzer Include="..\packages\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers.0.3.310801\analyzers\dotnet\vb\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers.Common.dll" />
    <Analyzer Include="..\packages\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers.0.3.310801\analyzers\dotnet\vb\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers.dll" />
    <Analyzer Include="..\packages\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.Analyzers.0.3.310801\analyzers\dotnet\vb\Microsoft.DotNet.UpgradeAssistant.Extensions.Default.CodeFixes.dll" />
  </ItemGroup>
  <ItemGroup>
    <PackageReference Include="Microsoft.Windows.Compatibility" Version="6.0.0" />
    <PackageReference Include="System.DirectoryServices.Protocols" Version="6.0.1" />
    <PackageReference Include="UI.for.WinForms.AllControls.Net60">
      <Version>2022.2.622.0</Version>
    </PackageReference>
  </ItemGroup>
  <ItemGroup>
    <Compile Remove="Custom Controls\CommentPanel.Designer.vb" />
    <Compile Remove="Custom Controls\CommentPanel.vb" />
    <Compile Remove="Custom Controls\ListViewCollapsible.vb" />
    <EmbeddedResource Remove="Custom Controls\CommentPanel.resx" />
  </ItemGroup>
  <ProjectExtensions>
    <VisualStudio>
      <UserProperties ShouldAddDPIScalingManifest="True" />
    </VisualStudio>
  </ProjectExtensions>
  <ItemGroup>
    <None Remove="SQL Queries\Create-Templates-Table.sql" />
    <None Remove="User Forms\ldwise2e.exy~" />
  </ItemGroup>
  <ItemGroup>
    <FrameworkReference Include="Microsoft.AspNetCore.App" />
  </ItemGroup>
  <ItemGroup>
    <Reference Include="DevComponents.DotNetBar2">
      <HintPath>C:\Program Files (x86)\DotNetBar for Windows Forms\DevComponents.DotNetBar2.dll</HintPath>
    </Reference>
  </ItemGroup>
  <ItemGroup>
    <EmbeddedResource Update="My Project\Resources.resx">
      <CustomToolNamespace>My.Resources</CustomToolNamespace>
      <Generator>PublicVbMyResourcesResXFileCodeGenerator</Generator>
      <LastGenOutput>Resources.Designer.vb</LastGenOutput>
    </EmbeddedResource>
  </ItemGroup>
</Project>

Here is the.vbproj of the test app I created to see if it will work on the new pc:

<Project Sdk="Microsoft.NET.Sdk">

  <PropertyGroup>
    <OutputType>WinExe</OutputType>
    <TargetFramework>net6.0-windows</TargetFramework>
    <StartupObject>Sub Main</StartupObject>
    <UseWindowsForms>true</UseWindowsForms>
    <MyType>WindowsForms</MyType>
  </PropertyGroup>

  <ItemGroup>
    <Import Include="System.Data" />
    <Import Include="System.Drawing" />
    <Import Include="System.Windows.Forms" />
  </ItemGroup>

  <ItemGroup>
    <Compile Update="My Project\Application.Designer.vb">
      <DesignTime>True</DesignTime>
      <AutoGen>True</AutoGen>
      <DependentUpon>Application.myapp</DependentUpon>
    </Compile>
  </ItemGroup>

  <ItemGroup>
    <None Update="My Project\Application.myapp">
      <Generator>MyApplicationCodeGenerator</Generator>
      <LastGenOutput>Application.Designer.vb</LastGenOutput>
    </None>
  </ItemGroup>

</Project>

Here is the screenshot of my Nuget packages.

Answer 1

try this

<dependentAssembly>
<assemblyIdentity name="YourDllFile" publicKeyToken="b77a5c561934e089" culture="neutral" />
<bindingRedirect oldVersion="0.0.0.0-YourDllFileVersion" newVersion="YourDllFileVersion" />

• set DeleteExistingFiles = true update all nugget packages and rebuild.

Answer 2

我可以通过进入我的 license.licx 文件并从文件中删除所有内容来解决这个问题。

Answer 3

Looks like you have the same problem that is reported here .

You can try the workaround from here: issuecomment-1034371295 :