> Something cool I created today with Ninject...

> I created a provider that allows me to do this:
> class Foo {
>  public Foo(AppSetting bar) { // AppSetting is a simple wrapper
> around a string
>    Console.Write(bar.Value)
>  }
> }

> where web.config contains:
> <appSettings> <add key="bar" value="123" /> </appSettings>

> The single line to bind the provider:
> Bind<AppSetting>().ToProvider<AppSettingProvider>();

> An finally the provider:
> class AppSettingProvider : Ninject.Core.Creation.IProvider
> {
>    public object Create(Ninject.Core.Activation.IContext context)
>    {
>        return new
> AppSetting(WebConfigurationManager.AppSettings[context.Member.Name]);
>    }

>    public Type GetImplementationType(Ninject.Core.Activation.IContext
> context)
>    {
>        return typeof(AppSetting);
>    }

>    public bool IsCompatibleWith(Ninject.Core.Activation.IContext
> context)
>    {
>        return
> WebConfigurationManager.AppSettings[context.Member.Name] != null;
>    }

>    public Type Prototype
>    {
>        get { return typeof(AppSetting); }
>    }
> }

> This was so simple and easy to figure out - beautiful!
> I'm more impressed with Ninject each time I use it.
>  :)

> Something cool I created today with Ninject...

> I created a provider that allows me to do this:
> class Foo {
>  public Foo(AppSetting bar) { // AppSetting is a simple wrapper
> around a string
>    Console.Write(bar.Value)
>  }
> }

> where web.config contains:
> <appSettings> <add key="bar" value="123" /> </appSettings>

> The single line to bind the provider:
> Bind<AppSetting>().ToProvider<AppSettingProvider>();

> An finally the provider:
> class AppSettingProvider : Ninject.Core.Creation.IProvider
> {
>    public object Create(Ninject.Core.Activation.IContext context)
>    {
>        return new
> AppSetting(WebConfigurationManager.AppSettings[context.Member.Name]);
>    }

>    public Type GetImplementationType(Ninject.Core.Activation.IContext
> context)
>    {
>        return typeof(AppSetting);
>    }

>    public bool IsCompatibleWith(Ninject.Core.Activation.IContext
> context)
>    {
>        return
> WebConfigurationManager.AppSettings[context.Member.Name] != null;
>    }

>    public Type Prototype
>    {
>        get { return typeof(AppSetting); }
>    }
> }

> This was so simple and easy to figure out - beautiful!
> I'm more impressed with Ninject each time I use it.
>  :)

> This is the one I whipped up to allow injecting the current IIdentity into
> a service class in an ASP.NET app:

> public class WebIdentityProvider : SimpleProvider<IIdentity>
> {
>     protected override IIdentity CreateInstance(IContext context)
>     {
>         return HttpContext.Current.User.Identity;
>     }

>     public override bool IsCompatibleWith(IContext context)
>     {
>         return HttpContext.Current != null;
>     }
> }

> Using IoC with HttpContext wasn't something I was able to figure out
> before...

> On Tue, Jun 24, 2008 at 6:19 AM, Andrew Davey <a.j.da...@gmail.com> wrote:

>> Something cool I created today with Ninject...

>> I created a provider that allows me to do this:
>> class Foo {
>>  public Foo(AppSetting bar) { // AppSetting is a simple wrapper
>> around a string
>>    Console.Write(bar.Value)
>>  }
>> }

>> where web.config contains:
>> <appSettings> <add key="bar" value="123" /> </appSettings>

>> The single line to bind the provider:
>> Bind<AppSetting>().ToProvider<AppSettingProvider>();

>> An finally the provider:
>> class AppSettingProvider : Ninject.Core.Creation.IProvider
>> {
>>    public object Create(Ninject.Core.Activation.IContext context)
>>    {
>>        return new
>> AppSetting(WebConfigurationManager.AppSettings[context.Member.Name]);
>>    }

>>    public Type GetImplementationType(Ninject.Core.Activation.IContext
>> context)
>>    {
>>        return typeof(AppSetting);
>>    }

>>    public bool IsCompatibleWith(Ninject.Core.Activation.IContext
>> context)
>>    {
>>        return
>> WebConfigurationManager.AppSettings[context.Member.Name] != null;
>>    }

>>    public Type Prototype
>>    {
>>        get { return typeof(AppSetting); }
>>    }
>> }

>> This was so simple and easy to figure out - beautiful!
>> I'm more impressed with Ninject each time I use it.
>>  :)

> Nice! That's pretty cool stuff. One thing you might want to change is to use
> context.Target.Name rather than context.Member.Name. The member is the
> member (constructor, property, method, or field) that's being injected,
> whereas the target is the actual point that is receiving the value. In the
> case of properties and fields, the member and the target are identical, but
> for constructors and methods, the target is the *argument* that is receiving
> the value. If you use context.Member.Name, you will end up with the name of
> the constructor or method rather than the argument.

> I'm working on an extension to support configuration injection, and I'll
> keep this in mind to see if I can support something like it. Thanks again!

> -Nate

> On Tue, Jun 24, 2008 at 7:19 AM, Andrew Davey <a.j.da...@gmail.com> wrote:

> > Something cool I created today with Ninject...

> > I created a provider that allows me to do this:
> > class Foo {
> >  public Foo(AppSetting bar) { // AppSetting is a simple wrapper
> > around a string
> >    Console.Write(bar.Value)
> >  }
> > }

> > where web.config contains:
> > <appSettings> <add key="bar" value="123" /> </appSettings>

> > The single line to bind the provider:
> > Bind<AppSetting>().ToProvider<AppSettingProvider>();

> > An finally the provider:
> > class AppSettingProvider : Ninject.Core.Creation.IProvider
> > {
> >    public object Create(Ninject.Core.Activation.IContext context)
> >    {
> >        return new
> > AppSetting(WebConfigurationManager.AppSettings[context.Member.Name]);
> >    }

> >    public Type GetImplementationType(Ninject.Core.Activation.IContext
> > context)
> >    {
> >        return typeof(AppSetting);
> >    }

> >    public bool IsCompatibleWith(Ninject.Core.Activation.IContext
> > context)
> >    {
> >        return
> > WebConfigurationManager.AppSettings[context.Member.Name] != null;
> >    }

> >    public Type Prototype
> >    {
> >        get { return typeof(AppSetting); }
> >    }
> > }

> > This was so simple and easy to figure out - beautiful!
> > I'm more impressed with Ninject each time I use it.
> >  :)- Hide quoted text -

> - Show quoted text -