RenderSpecifiedFolderFromArchive.cs

// Setup GroupDocs.Viewer config
ViewerConfig viewerConfig = new ViewerConfig();
viewerConfig.StoragePath = @"Absolute_Storage_Path";
 
// Create image or html handler
ViewerImageHandler imageHandler = new ViewerImageHandler(viewerConfig);

//Archive name with extension
string guid = "sample.zip";

// set options to render the list of items from certain folder.
ImageOptions options = new ImageOptions();
options.ArchiveOptions.FolderName = "FirstLevelFolder/SecondLevelFolder";
 
 // Get rendered pages
 List<PageImage> pages = imageHandler.GetPages(guid, options);