PdfGraphics.DrawImage(Stream, RectangleF) Method

Draws an image from a stream in the specified page rectangle. The image is scaled to fit the rectangle.

Assembly : DevExpress.Pdf.v25.2.Drawing.dll

NuGet Package : DevExpress.Pdf.Drawing

Declaration

C#
VB.NET

csharp

public void DrawImage(
    Stream data,
    RectangleF bounds
)

Public Sub DrawImage(
    data As Stream,
    bounds As RectangleF
)

Parameters

Name	Type	Description
data	Stream

A stream with image data.

| | bounds | RectangleF |

A page area in world coordinate system where you can draw an image.

Remarks

This method renders an image with its original resolution (DPI). The following formats are available:

BMP
JPEG
PNG
EMF
EMF+
TIFF
GIF
SVG

If you embed a multi-page TIFF image into the document, the PdfGraphics instance draws the active frame only (the default active frame is the first frame). Use the Image.SelectActiveFrame method to select a frame to use. The compression retains for TIFF images with CCITT T.4 or CCITT T.6 compression.

You can use the following properties to reduce the image size and the size of the resulting PDF:

ConvertImagesToJpeg - Specifies whether to convert bitmap images into JPEG to reduce the size of the resulting PDF file.
JpegImageQuality - Gets or sets the quality of JPEG images in the resulting PDF file.

You can also call the PdfDocumentProcessor.OptimizeDocument method to optimize PDF document images. The method parameter specifies image compression settings.

Tip

The PdfDocumentProcessor caches image data used as the DrawImage method parameter. If you need to draw the same image on multiple pages, you can reuse image data to improve the application performance and reduce the resulting file size.

To draw an image on the PDF page, use one of the following methods:

PdfGraphics.AddToPageForeground, PdfGraphics.AddToPageBackgroundThese methods allow you to draw content on an existing page.PdfDocumentProcessor.RenderNewPageDraws content on a new page.

Example: Draw an Image in the Page Center

The following code snippet draws an image in the page center:

C#
VB.NET

csharp

using DevExpress.Pdf;
using System.Drawing;
using System.IO;

using (var processor = new PdfDocumentProcessor())
{
    processor.LoadDocument("Documents//Document.pdf");

    using (PdfGraphics graphics = processor.CreateGraphicsWorldSystem())
    {
        // Obtain the first document page
        PdfPage page = processor.Document.Pages[0];

        using (FileStream fs = new FileStream("Documents//DevExpress.png", FileMode.Open))
        {
          // Calculate the image position
          RectangleF pageCenter = new RectangleF(106, 363, 400, 67);;

          // Draw an image into the calculated area
          graphics.DrawImage(image, pageCenter);

          // Add graphics content to the page foreground
          graphics.AddToPageForeground(page);
        }
    }
    processor.SaveDocument("result.pdf");
}

Imports DevExpress.Pdf
Imports System.Drawing
Imports System.IO

Using processor = New PdfDocumentProcessor()
  processor.LoadDocument("Documents//Document.pdf")

  Using graphics As PdfGraphics = processor.CreateGraphicsWorldSystem()
    ' Obtain the first document page
    Dim page As PdfPage = processor.Document.Pages(0)

    Using fs As New FileStream("Documents//DevExpress.png", FileMode.Open)
      ' Calculate the image position
      Dim pageCenter As RectangleF = New RectangleF(106, 363, 400, 67)

      ' Draw an image into the calculated area
      graphics.DrawImage(image, pageCenter)

      ' Add graphics content to the page foreground
      graphics.AddToPageForeground(page)
    End Using
  End Using
  processor.SaveDocument("result.pdf")
End Using