Convert Bitmap to Byte[]

[Sergio Florez M.]

How can I convert a Bitmap to a byte array? I've searched all over and none
of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image object.

--
El que persevera insiste
Sergio Florez M.
Medellín, Colombia

[Joannes Vermorel]

> Actually, I just need to create a Byte array starting from an Image
object.

You can serialize your object using the 'BinaryFormatter' and read the
bytes from the 'Stream'.

Joannes

[Justin Rogers]

Image have more private fields than just the image data. If you use a
BinaryFormatter
you'll get a bunch of .NET serialization primitives in the stream and you won't
be able
to easily get at the data. This is a fairly decent attempt at quickly turning a
bitmap into
a binary stream where you can get access to it's data though.

The primary method is to use LockBits
--
Justin Rogers
DigiTec Web Consultants, LLC.
Blog: http://weblogs.asp.net/justin_rogers

"Joannes Vermorel" <fi*******@lastname.com> wrote in message
news:uw**************@TK2MSFTNGP09.phx.gbl...

Actually, I just need to create a Byte array starting from an Image

object.

You can serialize your object using the 'BinaryFormatter' and read the
bytes from the 'Stream'.

Joannes

[Andy Gaskell]

Assuming image is an Image object:

MemoryStream stream = new MemoryStream();
image.Save(stream, System.Drawing.Imaging.ImageFormat.Bmp);
Byte[] bytes = stream.ToArray();

"Sergio Florez M." <se***********@hotmail.com> wrote in message
news:ek**************@TK2MSFTNGP11.phx.gbl...

How can I convert a Bitmap to a byte array? I've searched all over and none of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image object.
--
El que persevera insiste
Sergio Florez M.
Medellín, Colombia

[Jeu George]

Heres some sample code taht you coudl use.. you will need a unsage code
block for this, and compile it with the unsafe option
//Lock the images in memory so we can access them directly
originalBitmapData = originalBitmap.LockBits(new
Rectangle(0, 0, originalBitmap.Width, originalBitmap.Height),
ImageLockMode.ReadOnly, originalBitmap.PixelFormat);
comparisonBitmapData = comparisonBitmap.LockBits(new
Rectangle(0, 0, comparisonBitmap.Width, comparisonBitmap.Height),
ImageLockMode.ReadOnly, comparisonBitmap.PixelFormat);
outputBitmapData = outputBitmap.LockBits(new Rectangle(0, 0,
outputBitmap.Width, outputBitmap.Height), ImageLockMode.WriteOnly,
outputBitmap.PixelFormat);

//Get pointers to the first byte in each image
byte* originalScanPtr = (byte*)originalBitmapData.Scan0;

"Sergio Florez M." <se***********@hotmail.com> wrote in message
news:ek**************@TK2MSFTNGP11.phx.gbl...

How can I convert a Bitmap to a byte array? I've searched all over and none of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image object.
--
El que persevera insiste
Sergio Florez M.
Medellín, Colombia

[Jeu George]

Heres some sample code taht you coudl use.. you will need a unsage code
block for this, and compile it with the unsafe option
//Lock the images in memory so we can access them directly
originalBitmapData = originalBitmap.LockBits(new
Rectangle(0, 0, originalBitmap.Width, originalBitmap.Height),
ImageLockMode.ReadOnly, originalBitmap.PixelFormat);
comparisonBitmapData = comparisonBitmap.LockBits(new
Rectangle(0, 0, comparisonBitmap.Width, comparisonBitmap.Height),
ImageLockMode.ReadOnly, comparisonBitmap.PixelFormat);
outputBitmapData = outputBitmap.LockBits(new Rectangle(0, 0,
outputBitmap.Width, outputBitmap.Height), ImageLockMode.WriteOnly,
outputBitmap.PixelFormat);

//Get pointers to the first byte in each image
byte* originalScanPtr = (byte*)originalBitmapData.Scan0;

"Sergio Florez M." <se***********@hotmail.com> wrote in message
news:ek**************@TK2MSFTNGP11.phx.gbl...

How can I convert a Bitmap to a byte array? I've searched all over and none of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image object.
--
El que persevera insiste
Sergio Florez M.
Medellín, Colombia

[Simon Smith]

>"Sergio Florez M." <se***********@hotmail.com> wrote in message

news:ek**************@TK2MSFTNGP11.phx.gbl...

How can I convert a Bitmap to a byte array? I've searched all over and

none

of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image

object.

Image has a Save method, one of whose overrides takes a Stream to save
it to. Once in the stream, just read the stream to a byte array.
--
Simon Smith
simon dot s at ghytred dot com
www.ghytred.com/NewsLook - NNTP Client for Outlook

[Simon Smith]

>"Sergio Florez M." <se***********@hotmail.com> wrote in message

news:ek**************@TK2MSFTNGP11.phx.gbl...

How can I convert a Bitmap to a byte array? I've searched all over and

none

of the code samples I've managed to find work.

Actually, I just need to create a Byte array starting from an Image

object.

Image has a Save method, one of whose overrides takes a Stream to save
it to. Once in the stream, just read the stream to a byte array.
--
Simon Smith
simon dot s at ghytred dot com
www.ghytred.com/NewsLook - NNTP Client for Outlook