title: Is it possible to reference .NET Framework library in a Xamarin.Forms app?
body: <p>I have a Xamarin.Forms project (.NET Standard 2.0 library + Microsoft.NETCore.UniversalWindowsPlatform 6.0.7)
  and I would like to reference a .NET Framework 4.6.1 library.</p>
  
  <p>I added a reference to my Framework library in the .NET Standard 2.0 library, but this result in the error </p>
  
  <blockquote>
    <p>Cannot resolve Assembly or Windows Metadata file 'Type universe cannot resolve assembly: FrameworkLib, Version=1.0.10735.0,
    Culture=neutral, PublicKeyToken=null.</p>
  </blockquote>
  
  <p>I tried to add the reference to my FrameworkLib in the UWP project, but it fails with the message:</p>
  
  <blockquote>
    <p>Unable to add a reference to project 'FrameworkLib'</p>
  </blockquote>
  
  <p>Is it possible to add a reference to add a reference to a .Net Framework 4.6.1 library in a Xamarin.Forms app? Do I need a special NuGet package?</p>
  
  <p>According to <a href="https://docs.microsoft.com/en-us/dotnet/standard/net-standard" rel="nofollow noreferrer">https://docs.microsoft.com/en-us/dotnet/standard/net-standard</a> it seems like it should be compatible? I can reference my UWP project in my FrameworkLib, but not the other way around...</p>
  
  <p>I can reproduce this with empty projects. (VS 2017)</p>