BeforeStartEvent Class

Reference

Definition

Namespace:: Aspire.Hosting.ApplicationModel

Assembly:: Aspire.Hosting.dll

Package:: Aspire.Hosting v8.2.0

Package:: Aspire.Hosting v9.0.0

Source:: BeforeStartEvent.cs

Source:: BeforeStartEvent.cs

Important

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This event is published before the application starts.

public class BeforeStartEvent : Aspire.Hosting.Eventing.IDistributedApplicationEvent

type BeforeStartEvent = class
    interface IDistributedApplicationEvent

Public Class BeforeStartEvent
Implements IDistributedApplicationEvent

Inheritance: Object
BeforeStartEvent

Implements: IDistributedApplicationEvent

Examples

Subscribe to the BeforeStartEvent event and resolve the distributed application model.

var builder = DistributedApplication.CreateBuilder(args);
builder.Eventing.Subscribe<BeforeStartEvent>(async (@event, cancellationToken) => {
  var appModel = @event.ServiceProvider.GetRequiredService<DistributedApplicationModel>();
  // Mutate the distributed application model.
});

Remarks

Subscribing to this event is analogous to implementing the BeforeStartAsync(DistributedApplicationModel, CancellationToken) method. This event provides access to the IServiceProvider interface to resolve dependencies including DistributedApplicationModel service which is passed in as an argument in BeforeStartAsync(DistributedApplicationModel, CancellationToken).

Constructors

BeforeStartEvent(IServiceProvider, DistributedApplicationModel)

This event is published before the application starts.

Properties

Model	The DistributedApplicationModel instance.
Services	The IServiceProvider instance.

Applies to

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