## ExtendedAttribute class

Represents extended attributes.

The ExtendedAttribute type exposes the following members:
## Properties
| Name | Description |
| :- | :- |
|attribute_definition|Gets the attribute definition.|
|field_id|Gets the id of a field.|
|duration_value|Gets or sets value for attributes with 'Duration' type.|
|numeric_value|Gets or sets a value for attributes with numeric types (Cost, Number).|
|date_value|Gets or sets a value for attributes with date types (Date, Start, Finish).|
|flag_value|Gets or sets a value indicating whether a flag is set for an attribute with 'Flag' type.|
|text_value|Gets or sets a value for attributes with 'Text' type.|
|value_guid|Gets the guid of a lookup value.|
|value_read_only|Gets a value indicating whether a value of this [ExtendedAttribute](/tasks/python-net/aspose.tasks/extendedattribute/) instance is read-only.|
|is_error_value|Gets whether calculation of extended attribute's value resulted in an error.|

### See Also

* namespace [aspose.tasks](/tasks/python-net/aspose.tasks/)
* assembly [Aspose.Tasks](/tasks/python-net/)