# WellKnownGrainInterfaceProperties.Version

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.wellknowngraininterfaceproperties/) | [Fields](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.metadata.wellknowngraininterfaceproperties/fields/)

```csharp
public const string Version
```

The version of this interface encoded as a decimal integer.