Automatic Ninject Bindings Automatic Ninject Bindings

You have a large project with many interfaces and many different concrete implementations.  Because of this, managing every single Ninject binding is becoming challenging and time consuming.

By leveraging an additional Ninject NuGet package called Ninject.extensions.conventions, you can write a single line (wrapped over several for readability ;) that will manage all of your Ninject bindings. 



 IKernel kernel = new StandardKernel();
 kernel.Bind(x =>
 {
    x.FromThisAssembly()
    .SelectAllClasses()
    .BindDefaultInterface();
 });

Automatic Ninject Bindings

The above line of code will automatically scan your current assembly and bind interfaces to any classes that match in naming convention.

The name convention that is used is to drop the I from the interface and look for a concrete class that matches the interface name without the I.  E.g. IUser interface will automatically bind to a concrete class of User.

If the name fails to match exactly, the automatic binding will fail – great way to ensure typos are avoiding when an interface and class are created.

Published on Jan 7, 2014

Tags: ASP.NET MVC and Web API Tutorial | c# | ninject

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Jamie Munro
Jamie Munro

Jamie Munro is the author of ASP.NET MVC 5 with Bootstrap and Knockout.js, Knockout.js: Building Dynamic Client-Side Web Applications, 20 Recipes for Programming MVC 3, and 20 Recipes for Programming PhoneGap. He has been developing websites and web applications for over 20 years.

Jamie began his writing career in 2009. As the success of Jamie's blog grew, he turned his writing passion to books about web development in hopes that his many years of experience could be passed on to his readers.

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