ServiceCollectionMap.TryAddSingleton Method

Definition

Namespace:
Microsoft.EntityFrameworkCore.Infrastructure
Assembly:
Microsoft.EntityFrameworkCore.dll
Package:
Microsoft.EntityFrameworkCore v2.0.3
Package:
Microsoft.EntityFrameworkCore v2.1.11
Package:
Microsoft.EntityFrameworkCore v2.2.6
Package:
Microsoft.EntityFrameworkCore v3.0.0
Package:
Microsoft.EntityFrameworkCore v3.1.0
Package:
Microsoft.EntityFrameworkCore v5.0.0

Overloads

TryAddSingleton(Type, Type)

Adds a Singleton service implemented by the given concrete type if no service for the given service type has already been registered.
TryAddSingleton(Type, Func<IServiceProvider,Object>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.
TryAddSingleton(Type, Object)

Adds a Singleton service implemented by the given instance if no service for the given service type has already been registered.
TryAddSingleton<TService,TImplementation>()

Adds a Singleton service implemented by the given concrete type if no service for the given service type has already been registered.
TryAddSingleton<TService,TImplementation>(Func<IServiceProvider,TImplementation>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.
TryAddSingleton<TService>(Func<IServiceProvider,TService>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.
TryAddSingleton<TService>(TService)

Adds a Singleton service implemented by the given instance if no service for the given service type has already been registered.

TryAddSingleton(Type, Type)

Adds a Singleton service implemented by the given concrete type if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton (Type serviceType, Type implementationType);
abstract member TryAddSingleton : Type * Type -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
override this.TryAddSingleton : Type * Type -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
Public Overridable Function TryAddSingleton (serviceType As Type, implementationType As Type) As ServiceCollectionMap

Parameters

serviceType
Type

The contract for the service.

implementationType
Type

The concrete type that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton(Type, Func<IServiceProvider,Object>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton (Type serviceType, Func<IServiceProvider,object> factory);
abstract member TryAddSingleton : Type * Func<IServiceProvider, obj> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
override this.TryAddSingleton : Type * Func<IServiceProvider, obj> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
Public Overridable Function TryAddSingleton (serviceType As Type, factory As Func(Of IServiceProvider, Object)) As ServiceCollectionMap

Parameters

serviceType
Type

The contract for the service.

factory
Func<IServiceProvider,Object>

The factory that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton(Type, Object)

Adds a Singleton service implemented by the given instance if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton (Type serviceType, object implementation);
abstract member TryAddSingleton : Type * obj -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
override this.TryAddSingleton : Type * obj -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap
Public Overridable Function TryAddSingleton (serviceType As Type, implementation As Object) As ServiceCollectionMap

Parameters

serviceType
Type

The contract for the service.

implementation
Object

The object that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton<TService,TImplementation>()

Adds a Singleton service implemented by the given concrete type if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton<TService,TImplementation> () where TService : class where TImplementation : class, TService;
abstract member TryAddSingleton : unit -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
override this.TryAddSingleton : unit -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
Public Overridable Function TryAddSingleton(Of TService As Class, TImplementation As Class) () As ServiceCollectionMap

Type Parameters

TService

The contract for the service.

TImplementation

The concrete type that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton<TService,TImplementation>(Func<IServiceProvider,TImplementation>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton<TService,TImplementation> (Func<IServiceProvider,TImplementation> factory) where TService : class where TImplementation : class, TService;
abstract member TryAddSingleton : Func<IServiceProvider, #'Service> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
override this.TryAddSingleton : Func<IServiceProvider, #'Service> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
Public Overridable Function TryAddSingleton(Of TService As Class, TImplementation As Class) (factory As Func(Of IServiceProvider, TImplementation)) As ServiceCollectionMap

Type Parameters

TService

The contract for the service.

TImplementation

The concrete type that the given factory creates.

Parameters

factory
Func<IServiceProvider,TImplementation>

The factory that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton<TService>(Func<IServiceProvider,TService>)

Adds a Singleton service implemented by the given factory if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton<TService> (Func<IServiceProvider,TService> factory) where TService : class;
abstract member TryAddSingleton : Func<IServiceProvider, 'Service (requires 'Service : null)> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
override this.TryAddSingleton : Func<IServiceProvider, 'Service (requires 'Service : null)> -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
Public Overridable Function TryAddSingleton(Of TService As Class) (factory As Func(Of IServiceProvider, TService)) As ServiceCollectionMap

Type Parameters

TService

The contract for the service.

Parameters

factory
Func<IServiceProvider,TService>

The factory that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to

TryAddSingleton<TService>(TService)

Adds a Singleton service implemented by the given instance if no service for the given service type has already been registered.

public virtual Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap TryAddSingleton<TService> (TService implementation) where TService : class;
abstract member TryAddSingleton : 'Service -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
override this.TryAddSingleton : 'Service -> Microsoft.EntityFrameworkCore.Infrastructure.ServiceCollectionMap (requires 'Service : null)
Public Overridable Function TryAddSingleton(Of TService As Class) (implementation As TService) As ServiceCollectionMap

Type Parameters

TService

The contract for the service.

Parameters

implementation
TService

The object that implements the service.

Returns

ServiceCollectionMap

The map, such that further calls can be chained.

Applies to