# GuidId.Guid

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

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Core.Abstractions/IDs/GuidId.cs)

```csharp
[Orleans.Id(0)]
public readonly Guid Guid
```

The underlying [GuidId](/orleans/docs/api/csharp/microsoft.orleans.core.abstractions/orleans.runtime.guidid/).