Class ActivatorUtilities

Helper code for the various activator services.

Inheritance

object

ActivatorUtilities

Inherited Members

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

object.GetType()

object.MemberwiseClone()

Namespace: nanoFramework.DependencyInjection

Assembly: nanoFramework.DependencyInjection.dll

Syntax

public static class ActivatorUtilities

Methods

CreateInstance(IServiceProvider, Type, params object[])

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

Declaration

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

Parameters

Type	Name	Description
IServiceProvider	provider	The service provider used to resolve dependencies.
Type	instanceType	The type to activate.
object[]	parameters	Constructor arguments not provided by the provider.

Returns

Type	Description
object	An activated object of type instanceType.

Exceptions

Type	Condition
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.

Declaration

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

Parameters

Type	Name	Description
IServiceProvider	provider	The service provider.
Type	type	The type of the service.
object[]	parameters	Constructor arguments not provided by the provider.

Returns

Type	Description
object	The resolved service or created instance.

Exceptions

Type	Condition
InvalidOperationException	Unable to resolve a service while attempting to activate a constructor.