NinjectDependencyResolver fails binding ModelValidatorProvider

Question

I\'m developing an ASP.NET Web Api 2.2 with C#, .NET Framework 4.5.1.

After updating my Web.Api to Ninject 3.2.0 I get this error:

Error activating M         


        

Answer 1

I was having all sorts of grief with the WebApi2 and Ninject initialization after upgrading the Ninject packages (even uninstalling and deleting the old ones).

Specifically in your case I would remove these lines of code:

// Use the container and our NinjectDependencyResolver as
// application's resolver
var resolver = new NinjectDependencyResolver(container);
GlobalConfiguration.Configuration.DependencyResolver = resolver;

as they are probably the cause of the error (the NinjectWebCommon.cs and Ninject libraries deal with initializing the dependency resolver now).

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For others out there who followed a similar upgrade path to me. What worked for me was the following:

• Remove the old DependencyResolver initialization code (for me this was causing the specific error you mention as in earlier versions of Ninject/WebApi2, putting these lines in the WebApiConfig.cs Register() method was how you initialized the DependencyResolver...this no longer is the case):

  var kernel = new StandardKernel();
  config.DependencyResolver = new NinjectDependencyResolver(kernel);
  

• Install the Ninject.Web.WebApi.WebHost package. This installed the NinjectWebCommon.cs file. For me, just having the Ninject.Web.WebApi and it's dependencies didn't create this file.

My installed and working Ninject Packages for reference: