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// For complete examples and data files, please go to https://github.com/groupdocs-viewer/GroupDocs.Viewer-for-.NET
// Setup GroupDocs.Viewer config
ViewerConfig config = Utilities.GetConfigurations();

// Create html handler
ViewerHtmlHandler htmlHandler = new ViewerHtmlHandler(config);

// Get document stream
Stream stream = Utilities.GetDocumentStream(DocumentName);
// Get document information
DocumentInfoOptions options = new DocumentInfoOptions();
DocumentInfoContainer documentInfo = htmlHandler.GetDocumentInfo(stream, options);

Console.WriteLine("DateCreated: {0}", documentInfo.DateCreated);
Console.WriteLine("DocumentType: {0}", documentInfo.DocumentType);
Console.WriteLine("DocumentTypeFormat: {0}", documentInfo.DocumentTypeFormat);
Console.WriteLine("Extension: {0}", documentInfo.Extension);
Console.WriteLine("FileType: {0}", documentInfo.FileType);
Console.WriteLine("Guid: {0}", documentInfo.Guid);
Console.WriteLine("LastModificationDate: {0}", documentInfo.LastModificationDate);
Console.WriteLine("Name: {0}", documentInfo.Name);
Console.WriteLine("PageCount: {0}", documentInfo.Pages.Count);
Console.WriteLine("Size: {0}", documentInfo.Size);

foreach (PageData pageData in documentInfo.Pages)
{
    Console.WriteLine("Page number: {0}", pageData.Number);
    Console.WriteLine("Page name: {0}", pageData.Name);
}
stream.Close();