Class ActivatorUtilities

Namespace

Microsoft.Extensions.DependencyInjection

Assembly

nanoFramework.DependencyInjection.dll

Helper code for the various activator services.

public static class ActivatorUtilities

Inheritance

object

ActivatorUtilities

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

Methods

CreateInstance(IServiceProvider, Type, params object[])

Instantiate a type with constructor arguments provided directly and/or from an IServiceProvider.

public static object CreateInstance(IServiceProvider provider, Type instanceType, params object[] parameters)

Parameters

provider IServiceProvider

The service provider used to resolve dependencies.

instanceType Type

The type to activate.

parameters object[]

Constructor arguments not provided by the provider.

Returns

object

An activated object of type instanceType.

Exceptions

InvalidOperationException

A suitable constructor for type instanceType could not be located. Ensure the type is concrete and all parameters of a public constructor are either registered as services or passed as arguments. Also ensure no extraneous arguments are provided.

GetServiceOrCreateInstance(IServiceProvider, Type, params object[])

Retrieve an instance of the given type from the service provider. If one is not found then instantiate it directly.

public static object GetServiceOrCreateInstance(IServiceProvider provider, Type type, params object[] parameters)

Parameters

provider IServiceProvider

The service provider.

type Type

The type of the service.

parameters object[]

Constructor arguments not provided by the provider.

Returns

object

The resolved service or created instance.

Exceptions

InvalidOperationException

Unable to resolve a service while attempting to activate a constructor.