ASP.Net5 Startup.cs ConfigurationBuilder [duplicate]

Answer 1

There is no more constructor of ConfigurationBuilder having appEnv.ApplicationBasePath as argument, but instead there is SetBasePath method.

So change your code to:

var builder = new ConfigurationBuilder()
                .SetBasePath(appEnv.ApplicationBasePath)
                .AddJsonFile("config.json")
                .AddJsonFile($"config.{env.EnvironmentName}.json", optional: true);