Lazy Ninject Injection

I use ninject framework. In my code I have a Lazy object. I can create an instance, but when I call the value property I got an exception.

 private Lazy<IPsoriasisReportUserControl> psoriasisReportUserControl;

[Inject]
    public Lazy<IPsoriasisReportUserControl> PsoriasisReportUserControl
    {
        get { return psoriasisReportUserControl; }
        set { psoriasisReportUserControl = value; }
    }

I got

The lazily-initialized type does not have a public, parameterless
constructor

exception because the injection does not inject the method into the constructor. I think I have to write a method to the bind what Creates a new instance.

Answers:

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Method 1

Use the factory extension for Ninject https://github.com/ninject/ninject.extensions.factory

Method 2

Bind(typeof (Lazy<IPsoriasisReportUserControl>)).ToMethod(
            ctx => new Lazy<IPsoriasisReportUserControl>(() =>
                  Kernel.Get<IPsoriasisReportUserControl>()));

Method 3

You need a default public constructor on Lazy :

public Lazy() {}


All methods was sourced from stackoverflow.com or stackexchange.com, is licensed under cc by-sa 2.5, cc by-sa 3.0 and cc by-sa 4.0

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