GetImages Method (PdfPage)

In This Topic

Returns a read-only collection that contains image-resources of this page.

Syntax

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

'Declaration
 
Public Function GetImages() As PdfImageResource()

public PdfImageResource[] GetImages()

public: PdfImageResource*[]* GetImages();

public:
array<PdfImageResource^>^ GetImages();

Return Value

The read-only collection that contains image-resources of this page.

Example

Here is an example that shows how to obtain an information about image resources of all PDF pages:

VB.NET

''' <summary>
''' Gets and prints information about PDF image resources.
''' </summary>
''' <param name="pdfFileName">The filename of PDF document.</param>
Public Shared Sub GetImageResourcesInfo(pdfFileName As String)
	' open PDF document
	Using document As New Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName)
		' for each PDF page
		For pageIndex As Integer = 0 To document.Pages.Count - 1
			' get PDF page
			Dim page As Vintasoft.Imaging.Pdf.Tree.PdfPage = document.Pages(pageIndex)
			' get a collection of PDF image resources of page
			Dim imageResources As Vintasoft.Imaging.Pdf.Tree.PdfImageResource() = page.GetImages()
			' print the page index and count of image resources
			System.Console.WriteLine("Page {0} Image resources count: {1}", pageIndex + 1, imageResources.Length)
			' for each image resource
			For Each imageResource As Vintasoft.Imaging.Pdf.Tree.PdfImageResource In imageResources
				' print information about image resource
				System.Console.WriteLine(vbTab & " {0}x{1} {2,5}bpp {3}", imageResource.Width, imageResource.Height, imageResource.BitsPerPixel, imageResource.Compression)
			Next
		Next
	End Using
End Sub
            
' This code example produces the following output: 
        
        Page 1 Image resources count: 9
             157x139    32bpp Zip
             157x139     8bpp Jpeg
             700x596    24bpp Jpeg
             686x585    24bpp Jpeg
             459x317    32bpp Jpeg
             459x317     8bpp Zip, Predictor
             484x487    32bpp Jpeg
             484x487     8bpp Zip, Predictor
             824x537    24bpp Zip
        Page 2 Image resources count: 0

/// <summary>
/// Gets and prints information about PDF image resources.
/// </summary>
/// <param name="pdfFileName">The filename of PDF document.</param>
public static void GetImageResourcesInfo(string pdfFileName)
{
    // open PDF document
    using (Vintasoft.Imaging.Pdf.PdfDocument document = new Vintasoft.Imaging.Pdf.PdfDocument(pdfFileName))
    {
        // for each PDF page
        for (int pageIndex = 0; pageIndex < document.Pages.Count; pageIndex++)
        {
            // get PDF page
            Vintasoft.Imaging.Pdf.Tree.PdfPage page = document.Pages[pageIndex];
            // get a collection of PDF image resources of page
            Vintasoft.Imaging.Pdf.Tree.PdfImageResource[] imageResources = page.GetImages();
            // print the page index and count of image resources
            System.Console.WriteLine("Page {0} Image resources count: {1}", pageIndex + 1, imageResources.Length);
            // for each image resource
            foreach (Vintasoft.Imaging.Pdf.Tree.PdfImageResource imageResource in imageResources)
            {
                // print information about image resource
                System.Console.WriteLine("\t {0}x{1} {2,5}bpp {3}",
                    imageResource.Width, imageResource.Height,
                    imageResource.BitsPerPixel, imageResource.Compression);
            }
        }
    }
}
            
/* This code example produces the following output: 
            
Page 1 Image resources count: 9
     157x139    32bpp Zip
     157x139     8bpp Jpeg
     700x596    24bpp Jpeg
     686x585    24bpp Jpeg
     459x317    32bpp Jpeg
     459x317     8bpp Zip, Predictor
     484x487    32bpp Jpeg
     484x487     8bpp Zip, Predictor
     824x537    24bpp Zip
Page 2 Image resources count: 0         
*/

Requirements

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

Reference

PdfPage Class
PdfPage Members

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