# WaitAnnotation

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

Represents a wait relationship between two resources.

## Definition

```csharp
namespace Aspire.Hosting.ApplicationModel;

public sealed class WaitAnnotation
    : Aspire.Hosting.ApplicationModel.IResourceAnnotation
{
    // ...
}
```

## Remarks

The holder of this annotation is waiting on the resource in the [WaitAnnotation.Resource](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#resource) property.

## Constructors

- [WaitAnnotation(IResource, WaitType, int)](/reference/api/csharp/aspire.hosting/waitannotation/constructors.md#constructor-iresource-waittype-int) -- Represents a wait relationship between two resources.

## Properties

- [ExitCode](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#exitcode) : `int` `get` -- The exit code that the resource must return for the wait to be satisfied.
- [Resource](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#resource) : [IResource](/reference/api/csharp/aspire.hosting/iresource.md) `get` -- The resource that will be waited on.
- [WaitBehavior](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#waitbehavior) : [WaitBehavior?](/reference/api/csharp/aspire.hosting/waitbehavior.md) `get; init` -- The behavior of the wait. Only applicable when [WaitAnnotation.WaitType](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#waittype) is [WaitType.WaitUntilHealthy](/reference/api/csharp/aspire.hosting/waittype/fields.md).
- [WaitType](/reference/api/csharp/aspire.hosting/waitannotation/properties.md#waittype) : [WaitType](/reference/api/csharp/aspire.hosting/waittype.md) `get` -- The type of wait to apply to the dependency resource.