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    11. Extract data from various formats
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    13. Extract data from Microsoft Office PowerPoint presentations
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    15. Extract metadata from Microsoft Office PowerPoint presentations

    Extract metadata from Microsoft Office PowerPoint presentations

    To extract metadata from Microsoft Office PowerPoint presentations GetMetadata method is used. This method allows to extract the following metadata:

    NameDescription
    titleThe title of the presentation.
    subjectThe subject of the presentation.
    keywordsThe keyword of the presentation.
    commentsThe comments of the presentation.
    content-statusThe content status of the presentation.
    categoryThe category of the presentation.
    companyThe company of the presentation.
    managerThe manager of the presentation.
    authorThe name of the presentation’s author.
    last-authorThe name of the last presentation’s author.
    hyperlink-baseThe base string used for evaluating relative hyperlinks in this presentation.
    applicationThe name of the application.
    application-versionThe version number of the application that created the presentation.
    created-timeThe time of the presentation creation.
    last-saved-timeThe time of the the presentation when it was last saved.
    last-printed-timeThe time of the presentation when it was last printed.
    revision-numberThe presentation revision number.
    total-editing-timeThe total editing time in minutes.

    Here are the steps to extract metadata from Microsoft Office PowerPoint presentation:

    • Instantiate Parser object for the initial presentation;
    • Call GetMetadata method and obtain collection of document metadata objects;
    • Iterate through the collection and get metadata names and values.
    Warning
    GetMetadata method returns null value if metadata extraction isn’t supported for the document. For example, metadata extraction isn’t supported for TXT files. Therefore, for TXT file GetMetadata method returns null. If Microsoft Office PowerPoint presentation has no metadata, GetMetadata method returns an empty collection.

    The following example demonstrates how to extract metadata from PowerPoint presentation:

    // Create an instance of Parser class
using(Parser parser = new Parser(filePath))
{
    // Extract metadata from the presentation
    IEnumerable<MetadataItem> metadata = parser.GetMetadata();
  
    // Iterate over metadata items
    foreach(MetadataItem item in metadata)
    {
        // Print the item name and value
        Console.WriteLine(string.Format("{0}: {1}", item.Name, item.Value));
    }
}

    More resources

    GitHub examples

    You may easily run the code above and see the feature in action in our GitHub examples:

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