# StreamIdentity Properties

[Type overview](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.streamidentity/)

## Guid {#guid-e432a35c}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.streamidentity/properties/guid-e432a35c/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Core/StreamIdentity.cs#L33)

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

Gets the stream identifier.

## Namespace {#namespace-ece23c5c}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.streamidentity/properties/namespace-ece23c5c/)

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Streaming/Core/StreamIdentity.cs#L39)

```csharp
[Orleans.Id(1)]
public string Namespace
```

Gets the stream namespace.