The **Aspose.Cells.Properties** namespace provides classes to work with custom and built-in Spreadsheet properties such as title, keywords, company etc.

## Classes

| Class | Description |
| --- | --- |
| [BuiltInDocumentPropertyCollection](./builtindocumentpropertycollection/) | A collection of built-in document properties. |
| [ContentTypeProperty](./contenttypeproperty/) | Represents identifier information. |
| [ContentTypePropertyCollection](./contenttypepropertycollection/) | A collection of [`ContentTypeProperty`](../aspose.cells.properties/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`](../aspose.cells.properties/customproperty/) objects that represent additional information. |
| [DocumentProperty](./documentproperty/) | Represents a custom or built-in document property. |
| [DocumentPropertyCollection](./documentpropertycollection/) | Base class for [`BuiltInDocumentPropertyCollection`](../aspose.cells.properties/builtindocumentpropertycollection/) and [`CustomDocumentPropertyCollection`](../aspose.cells.properties/customdocumentpropertycollection/) collections. |
## Enumeration

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