If someone else is wondering how to use different appsettings for multiple environments here is a possible solution. dotnet publish –configuration [Debug|Release] will copy the appropriate appsettings.json file into the publish folder if *.csproj has a conditional logic for these files: First in the .pubxml publish profile file (can be found in Properties->PublishProfiles of Visual … Read more
First off, it is important when analyzing these issues to make a minimal reproducer, so that we can narrow down where the problem is. In the original code there are three red herrings: the readonly, the static and the Nullable<T>. None are necessary to repro the issue. Here’s a minimal repro: struct N<T> {} struct … Read more
I did a simple workaround using Func when I found myself in this situation. Firstly declare a shared delegate: public delegate IService ServiceResolver(string key); Then in your Startup.cs, setup the multiple concrete registrations and a manual mapping of those types: services.AddTransient<ServiceA>(); services.AddTransient<ServiceB>(); services.AddTransient<ServiceC>(); services.AddTransient<ServiceResolver>(serviceProvider => key => { switch (key) { case “A”: return serviceProvider.GetService<ServiceA>(); … Read more