Passing constructor arguments when using StructureMap

Question

I\'m using StructureMap for my DI. Imagine I have a class that takes 1 argument like:

public class ProductProvider : IProductProvider
{
     public ProductPr         


        

Answer 1

I suggest declaring that with the StructureMap configuration. Using the slightly newer StructureMap code:

For<IProductProvider>().Use<ProductProvider>
  .Ctor<string>("connectionString").Is(someValueAtRunTime);

This way you don't burden your client code from having to know the value and can keep your IoC configuration separate from your main code.

Answer 2

I found the answer myself! Here is the solution:

ObjectFactory.With("connectionString").EqualTo(someValueAtRunTime).GetInstance<IProductProvider>();

Hope this helps others who have come across the same issue.

Answer 3

If you are running structuremap 2.6.x you will have to do the following:

For<IProductProvider>().Use<ProductProvider>().WithProperty("name").EqualTo(someValueAtRunTime);

Ensure the property name matches the constructor argument.

If your parameter is coming from the app settings use the following line:

.WithProperty("").EqualToAppSetting("")