ServiceCollectionDescriptorExtensions.TryAddEnumerable Method

Definition

Namespace:

Microsoft.Extensions.DependencyInjection.Extensions

Assembly:

Microsoft.Extensions.DependencyInjection.Abstractions.dll

Package:

Microsoft.Extensions.DependencyInjection.Abstractions v10.0.0-preview.1.25080.5

Overloads

TryAddEnumerable(IServiceCollection, ServiceDescriptor)	Adds a ServiceDescriptor if an existing descriptor with the same ServiceType and an implementation that does not already exist in services.
TryAddEnumerable(IServiceCollection, IEnumerable<ServiceDescriptor>)	Adds the specified ServiceDescriptors if an existing descriptor with the same ServiceType and an implementation that does not already exist in services.

TryAddEnumerable(IServiceCollection, ServiceDescriptor)

Source:

ServiceCollectionDescriptorExtensions.cs

Adds a ServiceDescriptor if an existing descriptor with the same ServiceType and an implementation that does not already exist in services.

C#

public static void TryAddEnumerable(this Microsoft.Extensions.DependencyInjection.IServiceCollection services, Microsoft.Extensions.DependencyInjection.ServiceDescriptor descriptor);

Parameters

services

IServiceCollection

The IServiceCollection.

descriptor

ServiceDescriptor

The ServiceDescriptor.

Remarks

Use TryAddEnumerable(IServiceCollection, ServiceDescriptor) when registering a service implementation of a service type that supports multiple registrations of the same service type. Using Add(IServiceCollection, ServiceDescriptor) is not idempotent and can add duplicate ServiceDescriptor instances if called twice. Using TryAddEnumerable(IServiceCollection, ServiceDescriptor) will prevent registration of multiple implementation types.

TryAddEnumerable(IServiceCollection, IEnumerable<ServiceDescriptor>)

Source:

ServiceCollectionDescriptorExtensions.cs

Adds the specified ServiceDescriptors if an existing descriptor with the same ServiceType and an implementation that does not already exist in services.

C#

public static void TryAddEnumerable(this Microsoft.Extensions.DependencyInjection.IServiceCollection services, System.Collections.Generic.IEnumerable<Microsoft.Extensions.DependencyInjection.ServiceDescriptor> descriptors);

Parameters

services

IServiceCollection

The IServiceCollection.

descriptors

IEnumerable<ServiceDescriptor>

The ServiceDescriptors.

Remarks

Use TryAddEnumerable(IServiceCollection, ServiceDescriptor) when registering a service implementation of a service type that supports multiple registrations of the same service type. Using Add(IServiceCollection, ServiceDescriptor) is not idempotent and can add duplicate ServiceDescriptor instances if called twice. Using TryAddEnumerable(IServiceCollection, ServiceDescriptor) will prevent registration of multiple implementation types.