dnrTV Episode #126: Roll-Your-Own IoC with Me

2008-10-15 james 9 comments

My first dnrTV episode went live today. I am talking with Carl Franklin about dependency inversion, dependency injection, and inversion of control. I demonstrate how to build a very simple IoC container. My intent is to show developers that it isn’t any thing crazy scary. I talk about how IoC facilitates decoupling dependencies and creating more easily testable software. Check it out!

dnrTV #126: James Kovacs’ roll-your-own IoC container

Feedback is always welcome.

Carl and I plan to do another show focused on IoC containers in the next few weeks. Specifically we’ll be talking about what a full-fledged container offers over and above the roll-your-own. If you have other IoC questions you would like answered on the next show, drop me an email.

.NET General, Agile, Software Design none

#1 | Written by Sean Feldman about 16 years ago. Reply

Nice episode – great work!
I would recommend to switch to an implementation where type of implementer is stored against the contract in the dictionary, rather than a concrete instance. Otherwise you end up having a singleton for each request of an interface implementer that can cause headaches later down the road. Activator should do that nicely.
#2 | Written by Alexander Byndyu about 16 years ago. Reply

Hi

I saw it =) Very cool and impressive!
#3 | Written by AB Kolan about 16 years ago. Reply

Hi James,
Great show !!
We would really appreciate if you can upload the source code examples you used for the show..

Thanks in advance,

Great show again..!!
#4 | Written by Darren about 16 years ago. Reply

Great show!!! Ditto on uploading code for download.
#5 | Written by Mike L about 16 years ago. Reply

I also enjoyed the show… and have become interested in checking out Resharper. Would love to have the source code to play with.
#6 | Written by Juan Pablo Schmiede about 16 years ago. Reply

Great show, thanks
#7 | Written by Kalle Hoppe about 16 years ago. Reply

Great show, it was a nice complement to your previous dotnetrocks episode.
I have a question, how can I use IOC to mock web services? they don’t have an interface.
#8 | Written by James Kovacs about 16 years ago. Reply

@Kalle – When dealing with Web Services, you’re usually interacting with a code-gen’d proxy class. Given that this is an external service to my application (or at least a remote interaction point within my application), I define my own interface (and impl), which closely mimics, but hides the details of the proxy. I can then mock this interface. HTH.
#9 | Written by short jokes about 16 years ago. Reply

its unique..thumbs up ..
regards

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dnrTV Episode #126: Roll-Your-Own IoC with Me

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