# BeforePublishEvent

- Kind: `class`
- Package: [Aspire.Hosting](/reference/api/csharp/aspire.hosting.md)
- Version: `13.3.0`
- Namespace: `Aspire.Hosting.Publishing`
- Target framework: `net8.0`
- Source: [GitHub](https://github.com/microsoft/aspire/blob/bd20f904cde09ecb9c9ae5116a6f13614bf2d7c2/src/Aspire.Hosting/Publishing/BeforePublishEvent.cs)
- Implements: [IDistributedApplicationEvent](/reference/api/csharp/aspire.hosting/idistributedapplicationevent.md)

This event is published before the distributed application is published.

## Definition

```csharp
namespace Aspire.Hosting.Publishing;

public sealed class BeforePublishEvent
    : Aspire.Hosting.Eventing.IDistributedApplicationEvent
{
    // ...
}
```

## Constructors

- [BeforePublishEvent(IServiceProvider, DistributedApplicationModel)](/reference/api/csharp/aspire.hosting/beforepublishevent/constructors.md#constructor-iserviceprovider-distributedapplicationmodel) -- This event is published before the distributed application is published.

## Properties

- [Model](/reference/api/csharp/aspire.hosting/beforepublishevent/properties.md#model) : [DistributedApplicationModel](/reference/api/csharp/aspire.hosting/distributedapplicationmodel.md) `get` -- The [DistributedApplicationModel](/reference/api/csharp/aspire.hosting/distributedapplicationmodel.md) instance.
- [Services](/reference/api/csharp/aspire.hosting/beforepublishevent/properties.md#services) : `IServiceProvider` `get` -- The `IServiceProvider` for the app host.