CreatePage Method (original) (raw)

Syntax

Parameters

size

Size of the new page in document units. Cannot be empty (Empty).

resolution

The resolution of the new page in dots per inch (DPI). Must be greater than or equal 0. A value of 0 means

default resolution of 96.

Return Value

The newly created page.

Example

using Leadtools; using Leadtools.Caching; using Leadtools.Document; public void DocumentFactoryCreateExample() { var cache = GetCache(); // Create a new document var createOptions = new CreateDocumentOptions(); createOptions.Cache = cache; createOptions.Descriptor = null; createOptions.MimeType = null; createOptions.UseCache = true; createOptions.UserId = null; Console.WriteLine("Cache Policy: {0}", createOptions.CachePolicy.AbsoluteExpiration); string documentId = null; using (LEADDocument document = DocumentFactory.Create(createOptions)) { document.Name = "Virtual"; // Should have 0 pages and documents System.Diagnostics.Debug.Assert(document.Pages.Count == 0); System.Diagnostics.Debug.Assert(document.Documents.Count == 0); // DocumentDocuments reference // Add page 1 and 2 from a PDF file LoadDocumentOptions loadOptions = new LoadDocumentOptions(); loadOptions.Cache = cache; LEADDocument childDocument = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf"), loadOptions); // Do not dispose the child documents, but save it into the cache // This is optional and is done in this example since we will try to re-load the parent document // from the cache - and the child documents should be in the cache as well childDocument.SaveToCache(); // Now add the pages document.Pages.Add(childDocument.Pages[0]); document.Pages.Add(childDocument.Pages[1]); // Add an empty page var documentPage = document.Pages.CreatePage(LeadSizeD.Create(LEADDocument.UnitsPerInch * 8.5, LEADDocument.UnitsPerInch * 11), 300); document.Pages.Add(documentPage); // Add page 3 and 4 from a TIF file childDocument = DocumentFactory.LoadFromFile(Path.Combine(LEAD_VARS.ImagesDir, "ocr1.tif"), loadOptions); // Also save it into the cache childDocument.SaveToCache(); // Now add the pages document.Pages.Add(childDocument.Pages[0]); document.Pages.Add(childDocument.Pages[0]); // Should have 5 pages and 2 documents (the PDF and the TIF) System.Diagnostics.Debug.Assert(document.Pages.Count == 5); System.Diagnostics.Debug.Assert(document.Documents.Count == 2); // Tell the parent document to dispose any child documents when the parent is disposed document.AutoDisposeDocuments = true; // Show the info of this document, should say 5 pages Console.WriteLine("Original document information"); PrintOutDocumentInfo(document); // Now save, the parent document into the cache document.SaveToCache(); // And tell all documents to not delete themselves from the cache document.AutoDeleteFromCache = false; // Save the ID so we can load it documentId = document.DocumentId; } // Now, load the document from the cache var loadFromCacheOptions = new LoadFromCacheOptions(); loadFromCacheOptions.Cache = cache; loadFromCacheOptions.DocumentId = documentId; using (LEADDocument document = DocumentFactory.LoadFromCache(loadFromCacheOptions)) { // Should have 5 pages and 2 documents (the PDF and the TIF) System.Diagnostics.Debug.Assert(document.Pages.Count == 5); System.Diagnostics.Debug.Assert(document.Documents.Count == 2); // Show the info of this document, should still say 5 pages Console.WriteLine("Loaded from cache information"); PrintOutDocumentInfo(document); // Delete first page document.Pages.RemoveAt(0); // Delete the last page document.Pages.RemoveAt(document.Pages.Count - 1); // Should have 3 pages and 2 documents (the PDF and the TIF) System.Diagnostics.Debug.Assert(document.Pages.Count == 3); System.Diagnostics.Debug.Assert(document.Documents.Count == 2); Console.WriteLine("After removing the first 2 pages"); PrintOutDocumentInfo(document); // Delete this document and all its children from the cache when we are disposed document.AutoDeleteFromCache = true; } } static class LEAD_VARS { public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; }