PdfDocument Class

In This Topic

Represents a PDF document.

Object Model

Syntax

Visual Basic
C#
Managed Extensions for C++
C++/CLI

'Declaration
 
Public NotInheritable Class PdfDocument

public sealed class PdfDocument

public __gc __sealed class PdfDocument

public ref class PdfDocument sealed

Remarks

This class adds the following string resources in Vintasoft.Imaging.ImagingEnvironment.ResourceManager

"PDFDOCUMENT_GET_FONTS" = "Get document fonts"
"PDFDOCUMENT_REMOVE_UNUSED_NAMED_RESOURCES" = "Remove unused document resources"

Example

Here is an example that shows how to get information about PDF document:

VB.NET

Public Shared Sub GetInfoAboutPDF(filename As String)
	' open PDF document
	Using document As New Vintasoft.Imaging.Pdf.PdfDocument(filename)
		' show information about PDF document
		If document.IsEncrypted Then
			System.Console.WriteLine(String.Format("Encryption  : {0}", document.EncryptionSystem))
		End If
		System.Console.WriteLine(String.Format("Pages count : {0}", document.Pages.Count))
		System.Console.WriteLine(String.Format("Title       : {0}", document.DocumentInformation.Title))
		System.Console.WriteLine(String.Format("Author      : {0}", document.DocumentInformation.Author))
		System.Console.WriteLine(String.Format("Creator     : {0}", document.DocumentInformation.Creator))
		System.Console.WriteLine(String.Format("Producer    : {0}", document.DocumentInformation.Producer))
		System.Console.WriteLine(String.Format("Subject     : {0}", document.DocumentInformation.Subject))
		If document.DocumentInformation.CreationDate <> System.DateTime.MinValue Then
			System.Console.WriteLine(String.Format("CreationDate: {0}", document.DocumentInformation.CreationDate))
		End If
		If document.DocumentInformation.ModifyDate <> System.DateTime.MinValue Then
			System.Console.WriteLine(String.Format("ModifyDate  : {0}", document.DocumentInformation.ModifyDate))
		End If
            
		' for each page of PDF document
		Dim page As Vintasoft.Imaging.Pdf.Tree.PdfPage
		For i As Integer = 0 To document.Pages.Count - 1
			' show information about PDF page
			System.Console.WriteLine()
			page = document.Pages(i)
			System.Console.WriteLine(String.Format("Page {0}:", i))
			System.Console.WriteLine(String.Format(" - Size (in units)    = {0}", page.Size))
			System.Console.WriteLine(String.Format(" - Default Resolution = {0}", page.DefaultResolution))
			Dim images As Vintasoft.Imaging.Pdf.Tree.PdfImageResource() = page.GetImages()
			If images.Length > 0 Then
				System.Console.WriteLine(String.Format(" - Contains {0} images.", images.Length))
			End If
			If page.Thumbnail IsNot Nothing Then
				System.Console.WriteLine(" - Contains thumbnail.")
			End If
			If page.IsImageOnly Then
				System.Console.WriteLine(" - Is image only page.")
			End If
		Next
	End Using
End Sub

public static void GetInfoAboutPDF(string filename)
{
    // open PDF document
    using (Vintasoft.Imaging.Pdf.PdfDocument document = 
        new Vintasoft.Imaging.Pdf.PdfDocument(filename))
    {
        // show information about PDF document
        if (document.IsEncrypted)
            System.Console.WriteLine(string.Format("Encryption  : {0}", document.EncryptionSystem));
        System.Console.WriteLine(string.Format("Pages count : {0}", document.Pages.Count));
        System.Console.WriteLine(string.Format("Title       : {0}", document.DocumentInformation.Title));
        System.Console.WriteLine(string.Format("Author      : {0}", document.DocumentInformation.Author));
        System.Console.WriteLine(string.Format("Creator     : {0}", document.DocumentInformation.Creator));
        System.Console.WriteLine(string.Format("Producer    : {0}", document.DocumentInformation.Producer));
        System.Console.WriteLine(string.Format("Subject     : {0}", document.DocumentInformation.Subject));
        if (document.DocumentInformation.CreationDate != System.DateTime.MinValue)
            System.Console.WriteLine(string.Format("CreationDate: {0}", document.DocumentInformation.CreationDate));
        if (document.DocumentInformation.ModifyDate != System.DateTime.MinValue)
            System.Console.WriteLine(string.Format("ModifyDate  : {0}", document.DocumentInformation.ModifyDate));
            
        // for each page of PDF document
        Vintasoft.Imaging.Pdf.Tree.PdfPage page;
        for (int i = 0; i < document.Pages.Count; i++)
        {
            // show information about PDF page
            System.Console.WriteLine();
            page = document.Pages[i];
            System.Console.WriteLine(string.Format("Page {0}:", i));
            System.Console.WriteLine(string.Format(" - Size (in units)    = {0}", page.Size));
            System.Console.WriteLine(string.Format(" - Default Resolution = {0}", page.DefaultResolution));
            Vintasoft.Imaging.Pdf.Tree.PdfImageResource[] images = page.GetImages();
            if (images.Length > 0)
                System.Console.WriteLine(string.Format(" - Contains {0} images.", images.Length));
            if (page.Thumbnail != null)
                System.Console.WriteLine(" - Contains thumbnail.");
            if (page.IsImageOnly)
                System.Console.WriteLine(" - Is image only page.");
        }
    }
}

Inheritance Hierarchy

System.Object
Vintasoft.Imaging.Pdf.PdfDocument

Requirements

Target Platforms: .NET 5; .NET Core 3.1; .NET Framework 4.8, 4.7, 4.6, 4.5, 4.0, 3.5

Reference

PdfDocument Members
Vintasoft.Imaging.Pdf Namespace

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