How do I pass constructor arguments with dependency injection using Castle.Windsor?

Question

I am wiring up my first SubSonic 3 application (in an ASP.NET MVC 1.0 front-end) and am looking at Rob's SimpleRepository. I'm using Castle.Windsor as an injection framework.

In my application startup, I configure Castle to bind a SubSonic SimpleRepository to a SubSonic IRepository. Nothing complicated there. However, the SimpleRepository has a ctor overload which takes two values: a connection string name and a set of SimpleRepositoryOptions. Not having dug too deep into Castle in the past, it's not clear if there is a way to specify the ctor arguments via configuration (or some other means).

Right now, I have a custom implementation of the SimpleRepository that explicitly creates a SimpleRepository with those arguments in it's parameterless ctor, but if I want to change these at any point in time, it requires changing the code and recompiling.

Is there a more elegant way to configure Castle to take constructor arguments?

score 5 · Answer 1 · answered Sep 15 '09 at 22:43

If you're configuring Windsor using an XML file, you define your ctor arguments and their values like this:

<component id="repository" service="IRepository" type="SimpleRepository" ...>
    &ltparameters>
        <connectionString>your connection string</connectionString>
        ...
    &lt/parameters>
</component>

See the Windsor configuration reference for more info:

http://www.castleproject.org/container/documentation/v1rc3/manual/windsorconfigref.html

@mskfisher: XML registration is quite outdated. – Mauricio Scheffer Nov 02 '11 at 16:11 — Mauricio Scheffer, Nov 02 '11 at 16:11

score 4 · Accepted Answer · edited Sep 07 '15 at 14:39

4

See this wiki page. What's called "parameters" on that page is either a constructor parameter (which is a required parameter) or a property (optional parameter)

edited Sep 07 '15 at 14:39

Simon Hughes

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answered Sep 15 '09 at 22:12

Mauricio Scheffer

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That link is dead, and I couldn't find where it moved to - it seems they have some site errors right now. It'd be more helpful if you included a working example or a pertinent excerpt. – mskfisher Nov 02 '11 at 16:00
@mskfisher : things change over the years. Updated link. – Mauricio Scheffer Nov 02 '11 at 16:12
Thanks for updating the link. Could you also add an example in case the link dies again in the future? – mskfisher Nov 02 '11 at 16:20

How do I pass constructor arguments with dependency injection using Castle.Windsor?

2 Answers2