How to Convert an Image to a Byte Array and Back in C#?

Converting Images to Byte Arrays and Back in C#

This article demonstrates how to efficiently convert images into byte arrays and vice-versa within a C# environment, focusing on methods suitable for WPF applications.

Method 1: Using MemoryStream

The ImageToByteArray method leverages a MemoryStream to capture the image data. The image is saved to the stream using its original format, and the resulting byte array is returned.

<code class="language-csharp">public byte[] ImageToByteArray(System.Drawing.Image imageIn)
{
    using (var ms = new MemoryStream())
    {
        imageIn.Save(ms, imageIn.RawFormat);
        return ms.ToArray();
    }
}</code>

Method 2: Direct Conversion with Image Class

C# provides built-in functionality for streamlined image-to-byte array conversion:

<code class="language-csharp">
// Convert image to byte array
byte[] imageArray = Image.FromFile("image.jpg").ToByteArray();

// Convert byte array to image
Image convertedImage = Image.FromByteArray(imageArray);
```  This approach simplifies the process, eliminating the need for manual stream handling.  Remember to handle potential exceptions (e.g., `FileNotFoundException`).</code>

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