# ChronologicalEvictionStrategy.OnPurged

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.streams.common.chronologicalevictionstrategy/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.providers.streams.common.chronologicalevictionstrategy/properties/)

[Source](https://github.com/dotnet/orleans/blob/b7a9e3e1c9c54b3cec3a467c5734bf7744541bcf/src/Orleans.Streaming/Common/PooledCache/ChronologicalEvictionStrategy.cs)

```csharp
public Action<CachedMessage?, CachedMessage?>? OnPurged
```

Gets or sets the method which will be called when purge is finished.