# IVersionSelector

Package: [Microsoft.Orleans.Core.Abstractions](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/) 10.0.0

[NuGet package](https://www.nuget.org/packages/Microsoft.Orleans.Core.Abstractions) | [Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/Versions/Selector/IVersionSelector.cs#L9)

```csharp
public interface IVersionSelector
```

Functionality for selecting which versions of a grain interface should be preferred when performing grain placement.

## Methods

- [GetSuitableVersion(ushort, ushort[], ICompatibilityDirector)](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.versions.selector.iversionselector/methods/getsuitableversion-ushort-ushort-array-1-orleans-versions-compatibility-icompati-940d3194/)