Microsoft.AspNet.Core InvalidOperationException

Question

I've followed James Montemagno's Real Time Communication for Mobile with SignalR which works great until I select Linking: Sdk and User Assembilies. After that I get: a suitable constructor for type 'Microsoft.AspNetCore.Http.Connections.Client.HttpConnectionFactory' could not be located.
I've tried skip linking via Option, linking.config file and Runtime.Preserve but same error.
Is there a way to skip linking for AspNetCore or another way to resolve this error please?

Answer 1

Hello,​

Welcome to our Microsoft Q&A platform!

1. It's recommend to use Link SDK Assemblies Only as it is the safest and easiest to understand. The difference between the two in terms of application size is usually minimal and often when linking everything you can get in trouble as the linker can be aggressive and will remove more than needed, especially if you use reflection.
2. To preserve the assembily, please make sure the steps are all correct. You could refer to the tutorial: https://learn.microsoft.com/en-us/xamarin/android/deploy-test/linker#preserving-code

Best Regards,

Jarvan Zhang

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