Can u programm an AI like Alexa in C#?

Answer 1

No, personally me, can't. In group, may be. Why? Who needs number two Alexa?

Answer 2

yes you can, I encourage you to check out this link :
https://dotnet.microsoft.com/apps/machinelearning-ai

Answer 3

Yes you can - And the winforms library includes voice methods that could be used to give an AI speech (and recognize speech)