How do I pass configuration values to constructor in case of dependency implementation

Question

I am using Autofac for IoC

Here is the constructor of my class which takes IProcessor and size as parameters

public GatewayClient(IProcessor processor,
      int size)
{
   _size = size;
   _processor = processor;
}

Here is my container initiator class, whose responsibility is to register the dependencies.

var size = Convert.ToInt32(configuration.GetValue<string>("Settings:SizeInKb"));

builder.RegisterType<Processor>().As<IProcessor>().SingleInstance();
builder.Register(c => new GatewayClient(size)).As<IGatewayClient>().SingleInstance();

The error says as follow

There is no argument given that corresponds to the required formal parameter 'processor' of 'GatewayClient(IProcessor, int)' MyProject.GatewayService C:\work\GatewayService\ContainerInitiator.cs

Question is, How do I pass the size to the constructor? it shall be taken care of by autofac right?

You're passing `Func` to Autofac. You're the one constructing the `GatewayClient`, not `Autofac`. Presumably parameterless works because you also have a parameterless constructor. — ProgrammingLlama, Jul 02 '19 at 04:42
@John This is not a duplicate question. How do I pass 'size' parameter is the question? — kudlatiger, Jul 02 '19 at 04:50
question is how to pass 'size' so that i resolve the error. Please remove duplicate so that someone can help to answer the question. it's related to dependency injection not about simple paramter passing. — kudlatiger, Jul 02 '19 at 04:55
Understood. I've added a second duplicate which answers that part of the question. — ProgrammingLlama, Jul 02 '19 at 04:56

How do I pass configuration values to constructor in case of dependency implementation

0 Answers0