Indicates if this document was downloaded.
public bool IsDownloaded { get; }
true if this document was downloaded; otherwise, false.
When a document is created using DocumentFactory.LoadFromUri or DocumentFactory.LoadFromUriAsync, the framework will download the original file and store it in the cache if it is used, or a temporary file on the system otherwise. In these cases, the value of IsDownloaded will be true and GetDocumentFileName will return the path to this file (in the cache directly or the temporary one created). Uri will point to the original file or URL used to download the document. If the cache does not support disk access (external resource), the document data is still stored in the cache and can be retrieved using GetDocumentStream.
If the document is created using DocumentFactory.LoadFromFile, then the framework will not download the original file. Instead, it will use it as is. In this case, the value of IsDownloaded will be false and GetDocumentFileName will return the path to the original file used to load the document. Uri will return the same value as GetDocumentFileName in this situation.
If the document is created using DocumentFactory.LoadFromStream, then the value of IsDownloaded will false. If the document is then saved into the cache and reloaded (using SaveToCache and LoadFromCache(ObjectCache,string), IsDownloaded will be true and the document is treated as if it had been loaded from a file.
using Leadtools;using Leadtools.Caching;using Leadtools.Document;public void DocumentExample(){var cache = GetCache();var policy = new CacheItemPolicy();policy.AbsoluteExpiration = DateTime.Now + new TimeSpan(0, 0, 1);policy.SlidingExpiration = new TimeSpan(0, 0, 1);var options = new LoadDocumentOptions();options.CachePolicy = policy;options.Cache = cache;if(options.Cache == null){options.Cache = DocumentFactory.Cache;}string documentId = null;using (var document = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"), options)){document.GetDocumentFileName();document.IsReadOnly = false;document.AutoDeleteFromCache = false;// DocumentImages referencedocument.Images.DefaultBitsPerPixel = 24;Console.WriteLine(document.Images.IsResolutionsSupported);Console.WriteLine(document.Images.IsSvgSupported);// Check if the document has a stream in memoryif (document.HasStream){// Get the document streamdocument.GetDocumentStream();}// Indicate whether the document is using the cache or notConsole.WriteLine(document.HasCache);//Indicate if the document was downloadedConsole.WriteLine(document.IsDownloaded);// Gets a value that determines whether the document structure is supportedConsole.WriteLine(document.IsStructureSupported);// Output metadata values (DocumentMetadata reference)Console.WriteLine(document.Metadata.Values.Count);// Get the Mime type of the documentConsole.WriteLine(document.MimeType);// Parse document structure data (DocumentStructure reference)foreach(DocumentBookmark bookmark in document.Structure.Bookmarks){bookmark.Title = null;bookmark.FontStyles = DocumentFontStyles.Normal;document.Structure.Bookmarks.Add(bookmark);Console.WriteLine(bookmark.Children);Console.WriteLine(bookmark.Target);Console.WriteLine(document.Structure.Bookmarks.Count);Console.WriteLine(document.Structure.IsParsed);Console.WriteLine(document.Structure.ParseBookmarks);}document.Structure.Parse();// Get the document URIConsole.WriteLine(document.Uri);// Get each DocumentPage object (DocumentPage & DocumentPages reference)foreach (DocumentPage page in document.Pages){// Get the page as a raster image at the specified resolutionpage.GetImage(0);// Get the page as an Svg with specified optionspage.GetSvg(null);// Flip this page horizontallypage.Reverse();// Use this method to add an array of links for this pagepage.SetLinks(null);page.IsLinksModified = false;page.Resolution = 0;page.ViewPerspective = RasterViewPerspective.TopLeft;page.SetLinks(page.GetLinks());Console.WriteLine($"Page Number: {page.PageNumber}, Original PageNumber: {page.OriginalPageNumber}, Size of the page: {page.Size}");}PrintOutDocumentInfo(document);documentId = document.DocumentId;document.SaveToCache();}System.Threading.Thread.Sleep(2000);var loadFromCacheOptions = new LoadFromCacheOptions();loadFromCacheOptions.Cache = cache;loadFromCacheOptions.DocumentId = documentId;using (var document = DocumentFactory.LoadFromCache(loadFromCacheOptions)){if (null == document){Console.WriteLine("Cached document was expired and deleted!");}}}static class LEAD_VARS{public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images";}