Using default parameter values with Ninject 3.0

Question

I have a class with a constructor having a parameter with a default value. With Ninject 2.2, it would honor the [Optional] attribute and work fine with no b

Answer 1

You can avoid setting AllowNullInjection globally while still injecting a parameter only when a binding exists by configuring your binding like this:

Kernel.Bind()
      .To()
      .WithConstructorArgument(typeof(IValidator), c => c.Kernel.TryGet>());

[Optional] is not needed for that.