---
title: "How to: Encode and decode a JPEG image"
ms.date: "03/30/2017"
dev_langs: 
  - "csharp"
  - "vb"
  - "cpp"
helpviewer_keywords: 
  - "encoding image formats [WPF]"
  - "decoding JPEG images [WPF]"
  - "encoding JPEG images [WPF]"
  - "decoding image formats [WPF]"
  - "JPEG decoding [WPF]"
  - "JPEG encoding [WPF]"
ms.assetid: b8cfde37-9f68-4911-a05e-51d8d7bdec7b
---
# How to: Encode and decode a JPEG image

The following examples show how to decode and encode a JPEG image using the specific <xref:System.Windows.Media.Imaging.JpegBitmapDecoder> and <xref:System.Windows.Media.Imaging.JpegBitmapEncoder> objects.  
  
## Example - Decode a JPEG image

This example demonstrates how to decode a JPEG image using a <xref:System.Windows.Media.Imaging.JpegBitmapDecoder> from a <xref:System.IO.FileStream>.  
  
[!code-cpp[JpegBitmapDecoderEncoder#1](~/samples/snippets/cpp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CPP/jpegencoderdecoder.cpp#1)]
[!code-csharp[JpegBitmapDecoderEncoder#1](~/samples/snippets/csharp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CSharp/JpegEncoderDecoder.cs#1)]
[!code-vb[JpegBitmapDecoderEncoder#1](~/samples/snippets/visualbasic/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/VB/JpegEncoderDecoder.vb#1)]  
  
## Example - Encode a JPEG image

This example demonstrates how to encode a <xref:System.Windows.Media.Imaging.BitmapSource> into a JPEG image using a <xref:System.Windows.Media.Imaging.JpegBitmapEncoder>.  
  
[!code-cpp[JpegBitmapDecoderEncoder#4](~/samples/snippets/cpp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CPP/jpegencoderdecoder.cpp#4)]
[!code-csharp[JpegBitmapDecoderEncoder#4](~/samples/snippets/csharp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CSharp/JpegEncoderDecoder.cs#4)]
[!code-vb[JpegBitmapDecoderEncoder#4](~/samples/snippets/visualbasic/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/VB/JpegEncoderDecoder.vb#4)]  
  
## See also

- [Imaging Overview](imaging-overview.md)