Error when obfuscate Winforms library that targets .Net FW4.7 and NetCore3.1

hans_n

Hi there,

I'm configuring my csproj file to obfuscate dlls but it always fails with msg:
ERROR: Cannot find dependency 'System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089', which is required for assembly:
xxxxx, Version=4.7.20202.44, Culture=neutral, PublicKeyToken=xxxxxxx

Here is my csproj file

<Project Sdk="Microsoft.NET.Sdk.WindowsDesktop" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">

  <PropertyGroup Label="Globals">

    <SccProjectName>SAK</SccProjectName>

    <SccProvider>SAK</SccProvider>

    <SccAuxPath>SAK</SccAuxPath>

    <SccLocalPath>SAK</SccLocalPath>

    <AssemblyOriginatorKeyFile>key.snk</AssemblyOriginatorKeyFile>

    <Configurations>Debug;Release;Release2</Configurations>

  </PropertyGroup>

  <PropertyGroup>

    <TargetFrameworks>net472;netcoreapp3.0</TargetFrameworks>

    <GenerateAssemblyInfo>false</GenerateAssemblyInfo>

    <SignAssembly>true</SignAssembly>

  </PropertyGroup>

  <PropertyGroup>

    <OutputType>Library</OutputType>

    <RootNamespace>TestLib</RootNamespace>

    <AssemblyName>TestLib</AssemblyName>

    <EnableDefaultCompileItems>False</EnableDefaultCompileItems>

    <UseWindowsForms>True</UseWindowsForms>

  </PropertyGroup>

  

  <ItemGroup>

    <PackageReference Include="HtmlAgilityPack" Version="1.11.4" />

    <PackageReference Include="Newtonsoft.Json" Version="12.0.2" />

  </ItemGroup>

  

  <!-- SmartAssembly task -->

  <Target Name="SetSmartAssemblyProjectPathForEachTarget" BeforeTargets="BuildWithSmartAssembly" Condition="('$(Configuration)' == 'Release' or '$(Configuration)' == 'Release2') and ('$(TargetFramework)' != '')">

    <PropertyGroup>

      <SmartAssemblyProjectFile>$(MSBuildProjectDirectory)\SA_Obfuscation\$(AssemblyName)_$(Configuration)_$(TargetFramework).{sa}proj</SmartAssemblyProjectFile>

    </PropertyGroup>

    <Message Importance="High" Text="SmartAssembly project for '$(Configuration)/$(TargetFramework)' set to: $(SmartAssemblyProjectFile)" />

  </Target>

  <PropertyGroup>

    <SmartAssemblyOverwriteAssembly>true</SmartAssemblyOverwriteAssembly>

    <_SATaskAssembly Condition="'$(MSBuildRuntimeType)' == 'Core'">SmartAssembly.MSBuild.Tasks_NetStandard, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7f465a1c156d4d57</_SATaskAssembly>

    <_SATaskAssembly Condition="'$(MSBuildRuntimeType)' != 'Core'">SmartAssembly.MSBuild.Tasks, Version=7.0.0.0, Culture=neutral, PublicKeyToken=7f465a1c156d4d57</_SATaskAssembly>

  </PropertyGroup>

  <UsingTask TaskName="SmartAssembly.MSBuild.Tasks.Build" AssemblyName="$(_SATaskAssembly)" Condition="('$(Configuration)' == 'Release' or '$(Configuration)' == 'Release2') and ('$(TargetFramework)' != '')" />

  <Target Name="BuildWithSmartAssembly" AfterTargets="Build" Condition="('$(Configuration)' == 'Release' or '$(Configuration)' == 'Release2') and ('$(TargetFramework)' != '')">

    <SmartAssembly.MSBuild.Tasks.Build ProjectFile="$(SmartAssemblyProjectFile)" />

  </Target>

  <!-- /SmartAssembly task -->

  

</Project>

Could you please take a look and let me know how to fix it? Thanks!

Russell D

From memory this might be a problem with netcore 3.1 and fw 4.7. Are you able to update to 4.7.2 first and try again, then possibly to netcore 3.2?

Is the netstandard.dll library somewhere inside C:\Program Files\dotnet\sdk?

hans_n

Russell D said:

From memory this might be a problem with netcore 3.1 and fw 4.7. Are you able to update to 4.7.2 first and try again, then possibly to netcore 3.2?

Is the netstandard.dll library somewhere inside C:\Program Files\dotnet\sdk?

The netstandard.dll exists in sub folders of C:\Program Files\dotnet\sdk.
It's fine to obfuscate only net472 alone.
It also fails when obfuscate only netcoreapp3.0 or netcoreapp3.1. And there's no official netcoreapp3.2 yet, right?

hans_n

Hello, is there any updates about this issue?