> ## Documentation Index
> Fetch the complete documentation index at: https://docs.abbyy.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Changes Object (IChanges Interface)

This object is a collection of the [Change](/fine-reader/engine/api-reference/document-comparison-objects/change) objects. It is returned by the comparison methods and contains the list of changes that were detected when comparing the original document or page with its copy.

* The indexing of ABBYY FineReader Engine collections starts with 0.
* The foreach statement in C# (for each in Visual Basic .NET) can be used to manipulate the collection.

## Properties

| Name                                                                                                                  | Type                                                                                                                                                                                                             | Description                                            |
| --------------------------------------------------------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ |
| Count                                                                                                                 | [int](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties), read-only                                                                                                | Stores the number of elements in the collection.       |
| [Element](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property) | [Change](/fine-reader/engine/api-reference/document-comparison-objects/change), [read-only](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties#readonly_properties) | Provides access to a single element of the collection. |

## Methods

| Name                                                                                                          | Description                                            |
| ------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------ |
| [Item](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/item-method) | Provides access to a single element of the collection. |

## Related objects

<img src="https://mintcdn.com/abbyy/6udH-pkk8zkVafYH/images/fine-reader/engine/changes.gif?s=d4988746c834ac354fc3abac9d788433" alt="Changes" width="204" height="143" data-path="images/fine-reader/engine/changes.gif" />[](/fine-reader/engine/api-reference/document-comparison-objects/comparisonresult#changes)[](/fine-reader/engine/api-reference/document-comparison-objects/change#userlocation)[](/fine-reader/engine/api-reference/document-comparison-objects/change#referencelocation)[](/fine-reader/engine/visual-components-reference/supplementary-objects/spellwordcollection/element-property)[](/fine-reader/engine/api-reference/document-comparison-objects/changelocation)[](/fine-reader/engine/api-reference/document-comparison-objects/change)

[Object Diagram](/fine-reader/engine/api-reference/object-diagram)

## Output parameter

This object is the output parameter of the [GetChangesForReferencePage](/fine-reader/engine/api-reference/document-comparison-objects/comparisonresult/getchangesforreferencepage-method) and [GetChangesForUserPage](/fine-reader/engine/api-reference/document-comparison-objects/comparisonresult/getchangesforuserpage-method) methods of the [ComparisonResult](/fine-reader/engine/api-reference/document-comparison-objects/comparisonresult) object.

## Samples

The object is used in the [Document Comparison](/fine-reader/engine/guided-tour/samples#documentcomparison) demo tool for Windows and the [Document Comparison](/fine-reader/engine/guided-tour/samples#documentcomparison_linux) code sample for Linux and Mac.

## See also

[ComparisonResult](/fine-reader/engine/api-reference/document-comparison-objects/comparisonresult)

[Working with Properties](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-properties)

[Working with Collections](/fine-reader/engine/guided-tour/advanced-techniques/programming-aspects/working-with-collections)

[Migration Guide from ScanDifFinder SDK to Document Comparison API](/fine-reader/engine/specifications/migration-guide-from-scandiffinder-sdk-to-document-comparison-api)