How Can I Create a Bitmap Image from a Byte Array in C#?

Encoding Images into Byte Arrays for Storage and Retrieval

In programming, it is often necessary to store images in a format compatible with digital storage. One common approach is to represent images as byte arrays, which efficiently capture the raw data of the image's pixels. However, the process of creating bitmap images from byte arrays can be challenging.

To create a bitmap image from a byte array in C#, you can follow the following steps:

1. Import a MemoryStream: Wrap the byte array in a MemoryStream object to provide a stream-like interface for manipulating the data.

using (var ms = new MemoryStream(imageData))

2. Instantiate a Bitmap: Use the Bitmap() constructor overload that accepts a stream.

Bitmap bmp = new Bitmap(ms);

Once you have the bitmap, you can save it to a file or use it in your application as needed.

Additional Considerations:

• Ensure that the byte array contains valid image data. Otherwise, an ArgumentException will be thrown.
• Be aware of the maximum size limitations for PNG images encoded in byte arrays. Any dimensions exceeding 65,535 pixels in either direction will result in an ArgumentException.

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