Conditional resolution

If you want to specify in which cases you want to inject some special dependencies, you can use the conditional resolution feature of Stashbox. ##Parent type filter

class Wulfgar : IBarbarian
{
	[Dependency]
	public IWeapon Weapon { get; set; }
}

container.PrepareType<IWeapon, AegisFang>().WhenDependantIs<Wulfgar>().Register();

The constraint above indicates that Stashbox will choose the AegisFang implementation of the IWeapon interface when Wulfgar is being resolved.

##Attribute filter If you set an attribute filter for your registration, Stashbox will inject it only, if the dependency is decorated with that attribute:

class NeutralGoodAttribute : Attribute { }
class ChaoticEvilAttribute : Attribute { }

class Drizzt : IDrow
{
	[Dependency, NeutralGood]
	public IPatron Patron { get; set; }
}

class Yvonnel : IDrow
{
	[Dependency, ChaoticEvil]
	public IPatron Patron { get; set; }
}

container.PrepareType<IPatron, Mielikki>().WhenHas<NeutralGood>().Register();
container.PrepareType<IPatron, Lolth>().WhenHas<ChaoticEvil>().Register();

##Custom user defined filter You can specify custom filters yourself if you register your service in the following way:

class Drizzt : IDrow
{
	public IPatron Patron { get; set; }
}

class Yvonnel : IDrow
{
	public IPatron Patron { get; set; }
}

container.PrepareType<IPatron, Mielikki>().When(t => t.ParentType.Equals(typeof(Drizzt))).Register();
container.PrepareType<IPatron, Lolth>().When(t => t.ParentType.Equals(typeof(Yvonnel))).Register();