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40 lines
1.9 KiB
Markdown
40 lines
1.9 KiB
Markdown
---
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title: "How to: Encode and decode a JPEG image"
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ms.date: "03/30/2017"
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dev_langs:
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- "csharp"
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- "vb"
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- "cpp"
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helpviewer_keywords:
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- "encoding image formats [WPF]"
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- "decoding JPEG images [WPF]"
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- "encoding JPEG images [WPF]"
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- "decoding image formats [WPF]"
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- "JPEG decoding [WPF]"
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- "JPEG encoding [WPF]"
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ms.assetid: b8cfde37-9f68-4911-a05e-51d8d7bdec7b
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---
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# How to: Encode and decode a JPEG image
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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.
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## Example - Decode a JPEG image
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This example demonstrates how to decode a JPEG image using a <xref:System.Windows.Media.Imaging.JpegBitmapDecoder> from a <xref:System.IO.FileStream>.
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[!code-cpp[JpegBitmapDecoderEncoder#1](~/samples/snippets/cpp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CPP/jpegencoderdecoder.cpp#1)]
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[!code-csharp[JpegBitmapDecoderEncoder#1](~/samples/snippets/csharp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CSharp/JpegEncoderDecoder.cs#1)]
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[!code-vb[JpegBitmapDecoderEncoder#1](~/samples/snippets/visualbasic/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/VB/JpegEncoderDecoder.vb#1)]
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## Example - Encode a JPEG image
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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>.
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[!code-cpp[JpegBitmapDecoderEncoder#4](~/samples/snippets/cpp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CPP/jpegencoderdecoder.cpp#4)]
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[!code-csharp[JpegBitmapDecoderEncoder#4](~/samples/snippets/csharp/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/CSharp/JpegEncoderDecoder.cs#4)]
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[!code-vb[JpegBitmapDecoderEncoder#4](~/samples/snippets/visualbasic/VS_Snippets_Wpf/JpegBitmapDecoderEncoder/VB/JpegEncoderDecoder.vb#4)]
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## See also
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- [Imaging Overview](imaging-overview.md)
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