Microsoft.Extensions.Hosting Namespace

Provides classes that allow you to encapsulate an app's resources and lifetime functionality.

Classes

ApplicationMetadataHostBuilderExtensions	Extensions for application metadata.
BackgroundService	Base class for implementing a long running IHostedService.
ConsoleLifetimeOptions	Provides option flags for ConsoleLifetime.
EnvironmentName	Commonly used environment names. This type is obsolete and will be removed in a future version. The recommended alternative is Microsoft.Extensions.Hosting.Environments.
Environments	Commonly used environment names.
FakeHostingExtensions	Extension methods supporting host unit testing scenarios.
Host	Provides convenience methods for creating instances of IHostBuilder with preconfigured defaults.
HostAbortedException	The exception that is thrown upon IHost abortion.
HostApplicationBuilder	A builder for hosted applications and services that helps manage configuration, logging, lifetime, and more.
HostApplicationBuilderSettings	Contains the settings for constructing an HostApplicationBuilder.
HostBuilder	A program initialization utility.
HostBuilderContext	Context containing the common services on the IHost. Some properties may be null until set by the IHost.
HostDefaults	Constants for HostBuilder configuration keys.
HostEnvironmentEnvExtensions	Extension methods for IHostEnvironment.
HostingAbstractionsHostBuilderExtensions	Provides extension methods for the IHostBuilder from the hosting abstractions package.
HostingAbstractionsHostExtensions	Provides extension methods for the IHost from the hosting abstractions package.
HostingEnvironmentExtensions	Extension methods for IHostingEnvironment.
HostingHostBuilderExtensions	Provides extension methods for the IHostBuilder from the hosting package.
HostOptions	Options for IHost.
SystemdHostBuilderExtensions	Extension methods for setting up SystemdLifetime.
WindowsServiceLifetimeHostBuilderExtensions	Extension methods for setting up WindowsServiceLifetime.
WindowsServiceLifetimeOptions

Interfaces

IApplicationLifetime	Allows consumers to perform cleanup during a graceful shutdown. This type is obsolete and will be removed in a future version. The recommended alternative is Microsoft.Extensions.Hosting.IHostApplicationLifetime.
IHost	A program abstraction.
IHostApplicationBuilder	Represents a hosted applications and services builder that helps manage configuration, logging, and lifetime.
IHostApplicationLifetime	Allows consumers to be notified of application lifetime events.
IHostBuilder	A program initialization abstraction.
IHostedLifecycleService	Defines methods that are run before or after StartAsync(CancellationToken) and StopAsync(CancellationToken).
IHostedService	Defines methods for objects that are managed by the host.
IHostEnvironment	Provides information about the hosting environment an application is running in.
IHostingEnvironment	Provides information about the hosting environment an application is running in. This type is obsolete and will be removed in a future version. The recommended alternative is Microsoft.Extensions.Hosting.IHostEnvironment.
IHostLifetime	Tracks host lifetime.

Enums

BackgroundServiceExceptionBehavior

Specifies a behavior that the IHost will honor if an unhandled exception occurs in one of its BackgroundService instances.