DocumentInformationDictionary Object (IDocumentInformationDictionary Interface)

This object represents a document information dictionary which contains metadata from the PDF file. The object is a collection of DocumentInformationDictionaryItem objects. The DocumentInformationDictionary may exist either as an independent object or as a subobject of the DocumentContentInfo object.


  • 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.

  • If the values of the Author, Keywords, Subject or Title properties of the DocumentContentInfo object are not empty strings, the values of these properties are used instead of the corresponding items of the DocumentInformationDictionary object.


Name Type Description
Application Engine, read-only Returns the Engine object.
Count int, read-only Stores the number of elements in the collection.
Value BSTR Provides access to a metadata value by its name.


Name Description
AddNew Creates the DocumentInformationDictionaryItem object and adds it to the collection.
DeleteAll Removes all elements from the collection.
DeleteAt Removes an element from the collection.
Item Provides access to a single element of the collection (the DocumentInformationDictionaryItem object).

Related objects

Object Diagram

Output parameter

This object is the output parameter of the CreateDocumentInformationDictionary method of the Engine object.

See also



Working with Collections

Working with Properties

24.03.2023 8:51:52

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