# IStreamIdentity Properties

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

## Guid {#guid-1c4a0fd9}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamidentity/properties/guid-1c4a0fd9/)

```csharp
public abstract Guid Guid
```

Gets the unique identifier.

### Value

The unique identifier.

## Namespace {#namespace-98532c03}

[Dedicated page](/orleans/docs/api/csharp/microsoft.orleans.streaming/orleans.streams.istreamidentity/properties/namespace-98532c03/)

```csharp
public abstract string Namespace
```

Gets the namespace.

### Value

The namespace.