OptionsModel dependency injection in vNext console application -


i have vnext console application 1 of classes takes optionsmodel<t> poco configuration settings class.

i unable poco settings class resolved , injected rabbitmqconnection class below.

setting serviceprovider not issue, it's resolution of settings class.

note, vnext console application (not mvc6 app).

my second question is, , understand constructor arguments should kept minimal, not best pass 2 strings constructor arguments rather ioptions class former method more descriptive of rabbitmqconnection class requires? if so, how best injected class defined mappings (program.cs file in example below)

public class rabbitmqconnection {     public string hostname { get; set; }     public string username { get; set; }      public rabbitmqconnection(ioptions<messagingsettings> settings)     {         hostname = settings.value.hostname;         username = settings.value.username;     } }  public class messagingsettings {     public string hostname { get; set; }     public string username { get; set; } }  appsettings.json  {     "messagingsettings":{         "hostname":"localhost",         "username":"guest"     } }  public void configureservices(iservicecollection services) {     // tried registration number of ways below     services.configure<messagingsettings>(configuration.getsection("messagingsettings"));     services.configure<messagingsettings>(configuration);      // attempt 1 - runtime error saying cant resolve ioptions<messagesettings>     services.tryadd(servicedescriptor.singleton<rabbitmqconnection, rabbitmqconnection>());      // attempt 2 - same above, when breakpoint on messagingsettings, values in object null     services.tryadd(servicedescriptor.singleton<rabbitmqconnection>(factory =>     {         // instead of injecting messagesettings, pass through string values (constructor omitted clarity)         var messagingsettings = configuration.get<messagingsettings>();         return new rabbitmqconnection(messagingsettings.hostname, messagingsettings.username);     })); }  var conn = serviceprovider.getrequiredservice<rabbitmqconnection>();

you need call services.addoptions()


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