.NET Core Azure function -> error: could not load file or assembly System.Windows.Forms

Question

I have project running on .NET Core 3.1. I've created an Azure Function that references a 3rd party library (a SyncFusion library, if it makes any difference). When I try to use a specific function from that library I get the following error:

Could not load file or assembly 'System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'. Reference assemblies should not be loaded for execution. They can only be loaded in the Reflection-only loader context.

Any idea how to fix this?

Thank you for your attention!

Answer 1

--Try this in your csproj. It should keep the console window open of a winforms app.

<PropertyGroup>
<OutputType>Exe</OutputType>
</PropertyGroup>

--If you get a error that a dll is not connected then reference the Packages in your.csproj. Dlls you have to reference like this:

<ItemGroup>
<Reference Include="YourAssembly">
<HintPath>Path/To/YourAssembly.dll</HintPath>
</Reference>
</ItemGroup>