I am tring to use Ninject as a IoC container but could not understand how to create an instance of a class that has more than 1 parameter in the constructor. Basically I have a service interface for authentication in a PCL library and its implementation in a WP8 project that receives in the constructor the cosumer key, secret and baseAddress:
//On PCL project
public interface IAuthorizationService {
bool Authenticate();
}
//On WP8 Project
pubilc class MyAuthenticator : IAuthorizationService {
public MyAuthenticator(string consumerKey, string consumerSecret, string baseAddress) { ... }
public bool Authenticate() { ... }
}
Now I need to configure Ninject module so I can get an instance of IAuthorizationService.
If my class had no constructors I would do:
internal class Module : NinjectModule {
public override void Load() {
this.Bind<IAuthorizationService>().To<MyAuthenticator>();
}
}
If it had fixed values for the constructor I would do:
internal class Module : NinjectModule {
public override void Load() {
this.Bind<IAuthorizationService>().To<MyAuthenticator>().WithConstructorArgument( */* fixed argument here*/* );
}
}
And to get an instance Module.Get<IAuthorizationService>()
But what if the constructor parameters cannot be resolved at compile time? How to pass the paramenters? How should the bind code be?
Edited to claryfy the question.
Best Answer
It's very easy. No matter how many constructor arguments, the binding stays the same:
Let's say
MyAuthenticator
had a constructor with one parameter of typeIFoo
. All you got to do is tell ninject how it can resolve/create anIFoo
. Again, very simple:You don't need
WithConstructorArgument
ever, except in case you want to override the default behavior of ninject. Let's sayMyAuthenticator
has a parameter of typeIFoo
plus another parameterstring seed
which you want to configure specifically. All you'd need is:no need to specify the value of the
IFoo
parameter!