# VersionAttribute

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/CodeGeneration/VersionAttribute.cs#L12)

```csharp
public sealed class VersionAttribute : Attribute, IGrainInterfacePropertiesProviderAttribute
```

The VersionAttribute allows to specify the version number of the interface

## Constructors

- [VersionAttribute(ushort)](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.codegeneration.versionattribute/constructors/constructor-ushort-39b8d540/)

## Properties

- [Version](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.codegeneration.versionattribute/properties/version-aef95103/)