# IdAttribute.Id

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.serialization.abstractions/orleans.idattribute/) | [Properties](/orleans/docs/api/csharp/microsoft.orleans.serialization.abstractions/orleans.idattribute/properties/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization.Abstractions/Annotations.cs#L281)

```csharp
public uint Id
```

Gets the identifier.

### Value

The identifier.