# Deactivating

Package: [Microsoft.Orleans.Runtime](/orleans/docs/api/csharp/microsoft.orleans.runtime/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Runtime) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Runtime/Diagnostics/GrainLifecycleEvents.cs#L59)

```csharp
public sealed class Deactivating : LifecycleEvent
```

Event payload for when a grain activation is about to deactivate.

## Constructors

- [Deactivating(IGrainContext, DeactivationReason)](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.diagnostics.grainlifecycleevents.deactivating/constructors/constructor-orleans-runtime-igraincontext-orleans-deactivationreason-e5c9b409/)

## Fields

- [Reason](/orleans/docs/api/csharp/microsoft.orleans.runtime/orleans.runtime.diagnostics.grainlifecycleevents.deactivating/fields/reason-9022e680/)