## Classes

| Class | Description |
| --- | --- |
| [BuiltInDocumentPropertyCollection](./builtindocumentpropertycollection/) | A collection of built-in document properties. |
| [ContentTypeProperty](./contenttypeproperty/) | Represents identifier information. |
| [ContentTypePropertyCollection](./contenttypepropertycollection/) | A collection of [ContentTypeProperty](./contenttypeproperty/) objects that represent additional information. |
| [CustomDocumentPropertyCollection](./customdocumentpropertycollection/) | A collection of custom document properties. |
| [CustomProperty](./customproperty/) | Represents a custom property which store name and value pairs of arbitrary user-defined data for worksheet. |
| [CustomPropertyCollection](./custompropertycollection/) | A collection of [CustomProperty](./customproperty/) objects that represent additional information. |
| [DocumentProperty](./documentproperty/) | Represents a custom or built-in document property. |
| [DocumentPropertyCollection](./documentpropertycollection/) | Base class for [BuiltInDocumentPropertyCollection](./builtindocumentpropertycollection/) and [CustomDocumentPropertyCollection](./customdocumentpropertycollection/) collections. |
## Enums

| Enum | Description |
| --- | --- |
| [PropertyType](./propertytype/) | Specifies data type of a document property. |