ChirpStack API with C# and ASP.NET

Question

I wonder if anyone has already used the ChirpStack API with C# on an ASP.NET server.

I haven't found any code examples, questions on this topic or documentation. The only thing I found it's this page (from ChirpStack website) which talks about gRPC and give c# as an example of possible languages. In addition the ChirpStack Api nuget package seems to be abandoned or at least not used.

In all cases, I have this trouble when I try to download the Nuget package:

Error: could not install package 'ChirpStack.Api 3.17.0'. You are trying to install this package into a project that targets '.NETFramework,Version=v4.6.1', but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

I would like to send messages from ASP.NET webform to an IoT device using ChirpStack. Could someone help me please?

Thanks for all !