# TextFields.InstanceAttributeField class

Namespace: [Rhino.Runtime](https://developer.rhino3d.com/api/rhinocommon/namespace/rhino.runtime.md) · Assembly: [RhinoCommon](https://developer.rhino3d.com/api/rhinocommon/assembly/rhinocommon.md)

```cs
public class TextFields.InstanceAttributeField
```

## Constructors

- [TextFields.InstanceAttributeField](https://developer.rhino3d.com/api/rhinocommon/type/rhino.runtime.textfields.instanceattributefield/ctor.md): Block attribute definition.

## Properties

- [DefaultValue](https://developer.rhino3d.com/api/rhinocommon/type/rhino.runtime.textfields.instanceattributefield/defaultvalue.md): Default value used when inserting a block
- [Key](https://developer.rhino3d.com/api/rhinocommon/type/rhino.runtime.textfields.instanceattributefield/key.md): Attribute key
- [Prompt](https://developer.rhino3d.com/api/rhinocommon/type/rhino.runtime.textfields.instanceattributefield/prompt.md): Prompt displayed by the UI when inserting a block