DeletePages Method

Visual Basic
C#
Objective-C
Java
C++

public void DeletePages( 
   int firstPageNumber,
   int lastPageNumber,
   string destinationFileName
)

'Declaration
 
Public Sub DeletePages( _
   ByVal firstPageNumber As Integer, _
   ByVal lastPageNumber As Integer, _
   ByVal destinationFileName As String _
)

'Usage
 
Dim instance As PDFFile
Dim firstPageNumber As Integer
Dim lastPageNumber As Integer
Dim destinationFileName As String
 
instance.DeletePages(firstPageNumber, lastPageNumber, destinationFileName)

public:
void DeletePages( 
   int firstPageNumber,
   int lastPageNumber,
   String^ destinationFileName
)

Parameters

firstPageNumber: The 1-based number of the first page to be deleted. Must be a value greater than or equal to 1.
lastPageNumber: The 1-based number of the last page to be deleted. 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 represents "last page in the file".
destinationFileName: Name of the destination PDF file to be created. If the value of this parameter is null (Nothing in Visual Basic) then the file name set in FileName will be updated.

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

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

DocumentProperties. If the value of this property is null (Nothing in Visual Basic), then default properties will be used
SecurityOptions. If the value of this property is not null (Nothing in Visual Basic), then the destination file will be encrypted using the properties of this property. If the value of this property is null (Nothing in Visual Basic), the result file will not be encrypted
CompatibilityLevel. The version of the generated PDF file

Visual Basic
C#
WinRT C#
WinRT JavaScript
Silverlight C#
Silverlight VB

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Pdf
Imports Leadtools.WinForms

Public Sub PDFFileDeletePagesExample()
   Dim sourceFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "LEAD.pdf")
   Dim destinationFileName As String = Path.Combine(LEAD_VARS.ImagesDir, "LEAD_DeletePages.pdf")

   ' Get the number of pages in the source file
   Dim pdfFileObj As New PDFFile(sourceFileName)
   Dim pageCount As Integer = pdfFileObj.GetPageCount()
   Console.WriteLine("Pages in source file : {0}", pageCount)

   ' If the file has more than 1 page, delete all except the first page
   If pageCount > 1 Then
      ' -1 is (up to and including last page)
      pdfFileObj.DeletePages(2, -1, destinationFileName)
   End If
End Sub

Public NotInheritable Class LEAD_VARS
Public Const ImagesDir As String = "C:\Users\Public\Documents\LEADTOOLS Images"
End Class

using Leadtools;
using Leadtools.Codecs;
using Leadtools.Pdf;
using Leadtools.WinForms;

public void PDFFileDeletePagesExample()
{
   string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD.pdf");
   string destinationFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_DeletePages.pdf");

   // Get the number of pages in the source file
   PDFFile file = new PDFFile(sourceFileName);
   int pageCount = file.GetPageCount();
   Console.WriteLine("Pages in source file : {0}", pageCount);

   // If the file has more than 1 page, delete all except the first page
   if(pageCount > 1)
   {
      // -1 is (up to and including last page)
      file.DeletePages(2, -1, destinationFileName);
   }
}

static class LEAD_VARS
{
public const string ImagesDir = @"C:\Users\Public\Documents\LEADTOOLS Images";
}

Target Platforms

Reference

PDFFile Class
PDFFile Members