# Field.HasFieldId

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

[Source](https://github.com/dotnet/orleans/blob/e4e752cedecc2976811db49802c7a999b1f1c704/src/Orleans.Serialization/WireProtocol/Field.cs#L123)

```csharp
public readonly bool HasFieldId
```

Gets a value indicating whether this instance has a field identifier.

### Value

`true` if this instance has a field identifier; otherwise, `false`.