How do you add Basic Auth in Swagger?
Basic authentication is easy to define. In the global securityDefinitions section, add an entry with type: basic and an arbitrary name (in this example - basicAuth). Then, apply security to the whole API or specific operations by using the security section.
How to add Basic Authentication in Web API C#?
In IIS Manager, go to Features View, select Authentication, and enable Basic authentication. In your Web API project, add the [Authorize] attribute for any controller actions that need authentication. A client authenticates itself by setting the Authorization header in the request.