Setting value for injected class

Question

hopefully this should be a simple one.

So I have this class which is just this:

public class ClientIdValues : IClientIdValues
{

   public string[] clientIds {get; set;}
}

And the interface for that class is:

public interface IClientIdValues
{
  string [] ClientIds {get; set;}
}

This class gets injected into another class and is registered in startup.cs. The class is available when injected, but it's null and so it should be, I haven't set values yet.

However, I can't seem to figure out how to

I would assume it's some form of

services.Configure<ClientIdValues>(opt => opt.clientIds = stringArray);

Thanks in advance for any help!

Answer 1

You probably just need to add a constructor in which one you're instanciating your ClientIds property with new string[numberOfElement].

Also, if you don't know the number of elements that it will handle or if it needs to grow at some point, prefer using a List.

Answer 2

The way I have found to do this is with the implementation factory

In your case, the code would look like this:

services.AddScoped<IClientIdValues, ClientIdValues>((sp) => {
    var clientIdValues = new ClientIdValues();
    clientIdValues.clientIds = stringArray;
    return clientIdValues;
});