Question

I’m developing a project that includes a picture gallery managing by admin panel. I want to show thumbnail images to admin in the admin panel which is active and will be showing to end user.

Ok. I’m storing images into db in two parameters: ImageData(byte[]), ImageMimeType. So I want to store thumbnail versions of pictures at the when first time store images.
I have found some example code to resize and manipulate pictures in this adress link text :

private static Image cropImage(Image img, Rectangle cropArea)
{
   Bitmap bmpImage = new Bitmap(img);
   Bitmap bmpCrop = bmpImage.Clone(cropArea,
   bmpImage.PixelFormat);
   return (Image)(bmpCrop);
}

this function taking a image as a parameter. But I have ImageData(byte[]).

So, How do I convert my byte array to Image and Image to byte array?

Answer 1

Image from byte array

public Image byteArrayToImage(byte[] byteArray)
{
     MemoryStream ms = new MemoryStream(byteArray);
     return Image.FromStream(ms);
}

Image To byte array

public byte[] imageToByteArray(Image image)
{
 MemoryStream ms = new MemoryStream();
 return image.Save(ms,ImageFormat.Jpeg).ToArray();
}