PDFFile Constructor(String,String)

C#
Visual Basic
Objective-C
Java
C++

public PDFFile( 
   string fileName,
   string password
)

'Declaration

Public Function New( _
   ByVal fileName As String, _
   ByVal password As String _
)

'Usage

Dim fileName As String
Dim password As String
 
Dim instance As New PDFFile(fileName, password)

public:
PDFFile( 
   String^ fileName,
   String^ password
)

Parameters

fileName: The name of the file associated with this PDFFile.
password: The password associated with the PDF file at fileName.

This constructor will initialize the properties of the PDFFile object as follows:

FileName will be set to fileName
Password will be set to password
DocumentProperties will be set to null
Pages collection will be set to null

After the filename and optional password are set, call the Load method to populate the DocumentProperties and Pages properties of this PDFFile object with the values read from the file.

In certain situation, you may want to associate a PDFFile with a Postscript and not a PDF file. For example, to create a PDFFile object and call its Distill method to convert the Postscript file to PDF.

PDF files password must be 64 ASCII characters or less. This is defined by the PDFDocument.MaximumPasswordLength constant. LEADTOOLS will automatically convert the password string to ASCII and truncate if required.

This example will determine whether a PDF file is encrypted, ask the user for a password then open it.

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

Copy Code

Imports Leadtools
Imports Leadtools.Codecs
Imports Leadtools.Pdf
Imports Leadtools.WinForms
Imports Leadtools.Svg
Imports Leadtools.ImageProcessing

<TestMethod> _
Public Sub PDFFileEncryptedExample()
   Dim pdfFileName1 As String = Path.Combine(LEAD_VARS.ImagesDir, "Leadtools.pdf")
   Dim pdfFileName2 As String = Path.Combine(LEAD_VARS.ImagesDir, "Encrypted.pdf")
   ' Create an encrypted version of Leadtools.pdf
   Dim file As PDFFile = New PDFFile(pdfFileName1)
   file.SecurityOptions = New PDFSecurityOptions()
   file.SecurityOptions.UserPassword = "LEAD"
   file.Convert(1, -1, pdfFileName2)

   ' Now try to open it as a document
   Dim password As String = Nothing

   If PDFFile.IsEncrypted(pdfFileName2) Then
      Console.WriteLine("{0}" & Constants.vbLf & "Is encrypted. Enter the password:", pdfFileName2)
      password = Console.ReadLine()
   End If

   ' If the user entered the correct password (LEAD), you can open the file now
   Try
      file = New PDFFile(pdfFileName2, password)
      file.Load()

      Dim props As PDFDocumentProperties = file.DocumentProperties

      Console.WriteLine("  Title: {0}", props.Title)
      Console.WriteLine("  Author: {0}", props.Author)
      Console.WriteLine("  Subject: {0}", props.Subject)
      Console.WriteLine("  Keywords: {0}", props.Keywords)
      Console.WriteLine("  Creator: {0}", props.Creator)
      Console.WriteLine("  Producer: {0}", props.Producer)
      Console.WriteLine("  Created: {0}", props.Created)
      Console.WriteLine("  Modified: {0}", props.Modified)
      Console.WriteLine("----------:")
   Catch ex As Exception
      ' Otherwise, you will get an error that the PDF file is corrupted
      Console.WriteLine(ex.Message)
   End Try
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.Controls;
using Leadtools.Drawing;
using Leadtools.ImageProcessing;
using Leadtools.Pdf;
using Leadtools.Svg;
using Leadtools.WinForms;

[TestMethod]
public void PDFFileEncryptedExample()
{
   string pdfFileName1 = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf");
   string pdfFileName2 = Path.Combine(LEAD_VARS.ImagesDir, @"Encrypted.pdf");
   // Create an encrypted version of Leadtools.pdf
   PDFFile file = new PDFFile(pdfFileName1);
   file.SecurityOptions = new PDFSecurityOptions();
   file.SecurityOptions.UserPassword = "LEAD";
   file.Convert(1, -1, pdfFileName2);

   // Now try to open it as a document
   string password = null;

   if (PDFFile.IsEncrypted(pdfFileName2))
   {
      Console.WriteLine("{0}\nIs encrypted. Enter the password:", pdfFileName2);
      password = Console.ReadLine();
   }

   // If the user entered the correct password (LEAD), you can open the file now
   try
   {
      file = new PDFFile(pdfFileName2, password);
      file.Load();

      PDFDocumentProperties props = file.DocumentProperties;

      Console.WriteLine("  Title: {0}", props.Title);
      Console.WriteLine("  Author: {0}", props.Author);
      Console.WriteLine("  Subject: {0}", props.Subject);
      Console.WriteLine("  Keywords: {0}", props.Keywords);
      Console.WriteLine("  Creator: {0}", props.Creator);
      Console.WriteLine("  Producer: {0}", props.Producer);
      Console.WriteLine("  Created: {0}", props.Created);
      Console.WriteLine("  Modified: {0}", props.Modified);
      Console.WriteLine("----------:");
   }
   catch (Exception ex)
   {
      // Otherwise, you will get an error that the PDF file is corrupted
      Console.WriteLine(ex.Message);
   }
}

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

Target Platforms

Reference

PDFFile Class
PDFFile Members
Overload List