uwp app as grpc client on a RaspberryPi3

[jrf828]

A few months ago, I made uwp app as grpc client on a desktop pc (win10 2004), It is working well. Now I need to deploy the uwp grpc client on a RaspberryPi3(win10 lot 17763), but there is a System.DllNotFoundException:“Unable to load DLL 'grpc_csharp_ext.x86.dll' or one of its dependencies" when I new a grpc channel. I had get libgrpc_csharp_ext.arm7 via nuget. It seems doesn't be born for uwp. I also notice that the grpcpi demo is .net core project. I'm a Junior developer, Now I have no way to overcome this problem. In your opinion, what should I do can put uwp app as grpc client on a RaspberryPi3? I will thank you very much for your reply, please.