ContainerRegisterSingleton Method (Type, Type)

Simple Injector
Registers that the same instance of type implementationType will be returned every time an instance of type serviceType type is requested. If serviceType and implementationType represent the same type, the type is registered by itself. implementationType must be thread-safe when working in a multi-threaded environment. Open and closed generic types are supported.

Namespace:  SimpleInjector
Assembly:  SimpleInjector (in SimpleInjector.dll) Version: 5.3.0
Syntax
Copy
public void RegisterSingleton(
	Type serviceType,
	Type implementationType
)

Parameters

serviceType
Type: SystemType
The base type or interface to register. This can be an open-generic type.
implementationType
Type: SystemType
The actual type that will be returned when requested. This can be an open-generic type.
Exceptions
ExceptionCondition
ArgumentNullExceptionThrown when either serviceType or implementationType are null references.
ArgumentExceptionThrown when implementationType is no sub type from serviceType, or when one of them represents an open generic type.
InvalidOperationException Thrown when this container instance is locked and can not be altered, or when an the serviceType has already been registered.
See Also

Reference

Container Class
RegisterSingleton Overload
SimpleInjector Namespace