How to convert GrayScale image to byte array?

Question

I have grayscale image and i want to see its byte[] is there anyway to do this ?

Here i get grayscaleimage ;

 private void OnImage(NGrayscaleImage nImage)
 {
 }

And i want to send it to this function ;

 private void SendBiometricInfo(byte[] imageBuffer, int imageWidth, int imageHeight)
 {
 }

Is there anyway to do this ? If so could you help me to handle this issue ?

Here is what i tried ...

private void OnImage(NGrayscaleImage nImage)
{
    OnImageByte(ImageToByte(nImage), nImage.Width, nImage.Height);               
    //However here it says there is an invalid arguments.
}


public static byte[] ImageToByte(Image img)
{
    ImageConverter converter = new ImageConverter();
    return (byte[])converter.ConvertTo(img, typeof(byte[]));
}

void OnImageByte(byte[] imgBuffer, int width, int height)
{
}

Answer 1

If you can save your image as JPG, is presumible that your NGrayscaleImage inherits from Image , so you could try to save it into a memory stream

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

Hope it helps.