Flip Method

Summary

Flips the specified pages vertically.

Syntax

C++/CLI

Python

public void Flip( 
   int firstPageNumber, 
   int lastPageNumber 
)

public:  
   void Flip( 
      Int32 firstPageNumber, 
      Int32 lastPageNumber 
   )

def Flip(self,firstPageNumber,lastPageNumber):

Parameters

firstPageNumber

1-based first page number in the document. This value must be greater than or equal to 1.

lastPageNumber

1-based last page number in the document. This value must be greater or equal to firstPageNumber. A value of -1 means the last page in the document.

Remarks

This method loops through all the pages specified and calls DocumentPage.Flip. For more information, refer to Document Page Transformation.

Example

using Leadtools; 
using Leadtools.Document; 
using Leadtools.Document.Converter; 
using Leadtools.Document.Writer; 
 
 
public void DocumentPagesFlipExample() 
{ 
   var documentUri = new Uri("https://demo.leadtools.com/images/pdf/leadtools.pdf"); 
   string documentFile = Path.Combine(LEAD_VARS.ImagesDir, "PagesModified.pdf"); 
 
   // Load this document  
   var loadDocumentOptions = new LoadDocumentOptions(); 
   using (var document = DocumentFactory.LoadFromUri(documentUri, loadDocumentOptions)) 
   { 
      using (var documentConverter = new DocumentConverter()) 
      { 
         // Documents are read-only by default and we cannot modify them. Fix that 
         document.IsReadOnly = false; 
 
         // Get and store the first page of the document 
         DocumentPage page = document.Pages[0]; 
 
         // This document has 5 pages 
 
         // Flip the page vertically 
         page.Flip(); 
 
         var jobData = new DocumentConverterJobData(); 
         // The loaded document is our input  
         jobData.Document = document; 
         // We want PDF as output  
         jobData.DocumentFormat = DocumentFormat.Pdf; 
         // Into this file  
         jobData.OutputDocumentFileName = documentFile; 
 
         var job = documentConverter.Jobs.CreateJob(jobData); 
         documentConverter.Jobs.RunJob(job); 
      } 
   } 
   // Show the result 
   Process.Start(documentFile); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

DocumentPages Class

DocumentPages Members

Leadtools.Document Namespace

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Help Version 22.0.2023.4.21

Leadtools.Document Assembly

Introduction

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Leadtools.Document Namespace

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