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Convert Method

Converts the file associated with the PDFFile object to a different version using optional document properties and security options.
public void Convert( 
   int firstPageNumber, 
   int lastPageNumber, 
   string destinationFileName 
Public Sub Convert( _ 
   ByVal firstPageNumber As Integer, _ 
   ByVal lastPageNumber As Integer, _ 
   ByVal destinationFileName As String _ 
public void convert( 
   int intValue,  
   int intValue2,  
   java.lang.String string 
void Convert(  
   int firstPageNumber, 
   int lastPageNumber, 
   String^ destinationFileName 


The 1-based number of the first page to be converted. It must be a value greater than or equal to 1.

The 1-based number of the last page to be converted. It must be a value greater than or equal to firstPageNumber, and less than or equal to the total number of pages in the file. Use the special value of -1 to represent "last page in the file".

Name of the destination PDF file to be created. If the value of this parameter is null then the filename set in FileName will be updated.


To use this method, associate the PDFFile object with a valid PDF file and optional password. Do this by either using the PDFFile(string fileName) or PDFFile(string fileName, string password) constructors or set the filename and optional password directly into the FileName and Password properties. You do not need to call Load before using this method.

This method can be used to work on all or portion of the pages in a PDF file. To use all the pages of a document, pass 1 and -1 for firstPageNumber and lastPageNumber.

This method will use the following properties of this PDFFile object:

  • DocumentProperties. If the value of this property is null, then default properties will be used

  • SecurityOptions. If the value of this property is not null, then the destination file will be encrypted using the properties of this property. If the value of this property is null, the result file will not be encrypted.

  • CompatibilityLevel. The version of the generated PDF file


This example will convert a PDF file to 1.5 and save it with new properties.

using Leadtools.WinForms; 
using Leadtools; 
using Leadtools.Codecs; 
using Leadtools.Controls; 
using Leadtools.Drawing; 
using Leadtools.ImageProcessing; 
using Leadtools.Pdf; 
using Leadtools.Svg; 
public void PDFFileConvertExample() 
   string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string destinationFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_15.pdf"); 
   PDFFile pdfFile = new PDFFile(sourceFileName); 
   pdfFile.DocumentProperties = new PDFDocumentProperties(); 
   PDFDocumentProperties properties = pdfFile.DocumentProperties; 
   properties.Author = "Me"; 
   properties.Creator = "My Application"; 
   properties.Title = "My Document"; 
   properties.Producer = "LEAD"; 
   properties.Subject = "My Subject"; 
   properties.Keywords = "Keyword1 Keyword2"; 
   properties.Created = DateTime.Now; 
   properties.Modified = DateTime.Now; 
   pdfFile.CompatibilityLevel = PDFCompatibilityLevel.PDF15; 
   pdfFile.Convert(1, -1, destinationFileName); 
static class LEAD_VARS 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
Imports Leadtools 
Imports Leadtools.Codecs 
Imports Leadtools.Pdf 
Imports Leadtools.WinForms 
Imports Leadtools.Svg 
Imports Leadtools.ImageProcessing 
Imports LeadtoolsPdfExamples.Leadtools.Examples 
Public Sub PDFFileConvertExample() 
   Dim sourceFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf") 
   Dim destinationFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "LEAD_15.pdf") 
   Dim pdfFile As PDFFile = New PDFFile(sourceFileName) 
   pdfFile.DocumentProperties = New PDFDocumentProperties() 
   Dim properties As PDFDocumentProperties = pdfFile.DocumentProperties 
   properties.Author = "Me" 
   properties.Creator = "My Application" 
   properties.Title = "My Document" 
   properties.Producer = "LEAD" 
   properties.Subject = "My Subject" 
   properties.Keywords = "Keyword1 Keyword2" 
   properties.Created = DateTime.Now 
   properties.Modified = DateTime.Now 
   pdfFile.CompatibilityLevel = PDFCompatibilityLevel.PDF15 
   pdfFile.Convert(1, -1, destinationFileName) 
End Sub 
Public NotInheritable Class LEAD_VARS 
   Public Const ImagesDir As String = "C:\LEADTOOLS22\Resources\Images" 
End Class 

Target Platforms

See Also


PDFFile Class

PDFFile Members

Help Version 22.0.2021.10.28
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Leadtools.Pdf Assembly
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2021 LEAD Technologies, Inc. All Rights Reserved.