Subject Property

Summary

Subject of the PDF document.

Syntax

C++/CLI

Java

Python

public string Subject { get; set; }

public String getSubject(); 
public void setSubject( 
   java.lang.String string 
);

public: 
property String^ Subject { 
   String^ get(); 
   void set (    String^ ); 
}

Subject # get and set (PDFDocumentProperties)

Property Value

A System.String that contain the subject of the PDF document. The default value is null.

Remarks

PDF property item strings must be 126 characters or less. This is defined by the PDFDocument.MaximumStringLength constant. LEADTOOLS will automatically truncate the string if required.

Example

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 PDFFileExample() 
{ 
   string sourceFileName = Path.Combine(LEAD_VARS.ImagesDir, @"Leadtools.pdf"); 
   string destFileName = Path.Combine(LEAD_VARS.ImagesDir, @"LEAD_14.pdf"); 
 
   // Load the properties of the file 
   ShowProperties("Source file", sourceFileName); 
 
   // Update the properties of the file 
   PDFFile file = new PDFFile(sourceFileName); 
   file.DocumentProperties = new PDFDocumentProperties(); 
   file.DocumentProperties.Author = "Me"; 
   file.DocumentProperties.Title = "My title"; 
   file.DocumentProperties.Subject = "My subject"; 
   file.DocumentProperties.Creator = "My application"; 
   file.DocumentProperties.Modified = DateTime.Now; 
   file.SetDocumentProperties(destFileName); 
 
   // Show the properties of the new file 
   ShowProperties("Destination file", destFileName); 
} 
 
private static void ShowProperties(string message, string fileName) 
{ 
   Console.WriteLine(message); 
 
   // Get the properties of the file 
   PDFFile file = new PDFFile(fileName); 
   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("----------:"); 
} 
 
static class LEAD_VARS 
{ 
   public const string ImagesDir = @"C:\LEADTOOLS22\Resources\Images"; 
}

Requirements

Target Platforms

Reference

PDFDocumentProperties Class

PDFDocumentProperties Members

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Help Version 22.0.2023.7.10

Leadtools.Pdf Assembly

Introduction

Getting Started

Namespaces

Leadtools.Pdf Namespace

Assemblies