Getting enums from imported .net core dll in powershell

PowerShell Help
1

I’m trying to load enums from a .netcore dll that I imported in powershell. I tried many actions:

[Reflection.Assembly]::LoadFrom(dllPath)
Add-Type -Path dllpath
[Reflection.Assembly]::Load(dllPath)

and then called: [MyEnum]::enumName

I got this Exception :

Could not load file or assembly 'System.Runtime, Version=4.2.1.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a' or one of its dependencies. The system 
cannot find the file specified.

Can you please let me know if I’m missing anything. How to get these enums ?

Thanks,