Service Locator

Definition

The service locator class is a helper class that acts like an IoC container. You can register instances as singleton/transient scope. Register dependencies and request an instance of an interface/class.

Examples

The following example registers a singleton class and then requests it multiple times. In this example, the class is instantiated in the first Resolve call

public class SingletonTest 
{
    public DateTime Date { get; set; }

    //when creating an instance, set the Date property to DateTime.Now value.
    public SingletonTest() => Date = DateTime.Now;
}

static void Main(string[] args)
{
    //Registering
    ServiceLocator.Register<SingletonTest>(LifeStyle.SINGLETON);

    var instanceA = ServiceLocator.Resolve<SingletonTest>();

    Thread.Sleep(1000);

    var instanceB = ServiceLocator.Resolve<SingletonTest>();

    Thread.Sleep(1000);

    var instanceC = ServiceLocator.Resolve<SingletonTest>();

    //check that all 3 instances have the same Date.
}

The following creates a new instance for every Resolve call

public class TransientTest 
{
    public DateTime Date { get; set; }

    //when creating an instance, set the Date property to DateTime.Now value.
    public TransientTest() => Date = DateTime.Now;
}

static void Main(string[] args)
{
    //Registering
    ServiceLocator.Register<TransientTest>();

    var instanceA = ServiceLocator.Resolve<TransientTest>();

    Thread.Sleep(1000);

    var instanceB = ServiceLocator.Resolve<TransientTest>();

    Thread.Sleep(1000);

    var instanceC = ServiceLocator.Resolve<TransientTest>();

    //check that all 3 instances have different Date property values.
}