How to create bitmap from byte array?

c# image bitmap bytearray
goGud picture goGud · Feb 4, 2014 · Viewed 155.3k times · Source

I searched all question about byte array but i always failed. I have never coded c# i am new in this side. Could you help me how to make image file from byte array.

Here is my function which stores byte in array named imageData

public void imageReady( byte[] imageData, int fWidth, int fHeight))

Answer

Mike Perrenoud picture Mike Perrenoud · Feb 4, 2014

You'll need to get those bytes into a MemoryStream:

Bitmap bmp;
using (var ms = new MemoryStream(imageData))
{
    bmp = new Bitmap(ms);
}

That uses the Bitmap(Stream stream) constructor overload.

UPDATE: keep in mind that according to the documentation, and the source code I've been reading through, an ArgumentException will be thrown on these conditions:

stream does not contain image data or is null.
-or-
stream contains a PNG image file with a single dimension greater than 65,535 pixels.

Related questions

Image vs Bitmap class

I have trouble understanding the differences between the Image class and the Bitmap class. Now, I know that the Bitmap inherits from the Image but from what I understand both are very similar. Can anyone shed some light on this …

Read More
How can I read image pixels' values as RGB into 2d array?

I was making a 2d map editor for my square tile platformer game, when I realized I could really use an image editor with its abilities to repaint adjacent pixels and many more, so I figured I should try and …

Read More
How do I fill a bitmap with a solid color?

I need to create a 24-bit bitmap (resolution 100x100 pixels) using a unique RGB color and save the generated image to the disk. I currently use the SetPixel function, but it is extremely slow. Bitmap Bmp = new Bitmap(width, height); //... //... …

Read More