How to save more than one image in one byte array using c#

[anandmms]

Hello friend,

my problem is to save more than one fingerprint images in one byte array and then store in database(oracle).

i dont know how to solve it. But previously i had did image saving using byte array, but i want to know how to save more than one images in one database field....

actually i convert one image to byte array using the below code

pb1 = picturebox1
pb2 = picturebox2

//Ist image

MemoryStream ms = new MemoryStream();
pb1.Image.Save(ms,pb1.Image.RawFormat);
len = ms.Length;
b = new byte[Convert.ToInt32(len)];

//IInd image

pb2.Image.Save(ms, pb2.Image.RawFormat);
len = ms.Length;
c = new byte[Convert.ToInt32(len)];

how to store these two different byte array (b & c) in one byte array

thanks in advance...

anand

[tlhintoq]

Is this a school homework assignment?

[anandmms]

Y r u asking like this... if u know just rpl, else keep close all of u.....

[Plater]

Well the code you have, seems like BOTH images should be contained in that memorystream object, so they're both already together.
I would recomend putting some type of deliminator between the two so you can tell them apart when you need to.

As for why you were asked if it was homework problem, please see the Posting Guidelines about how we will not do your homework for you.

[Curtis Rutland]

Y r u asking like this... if u know just rpl, else keep close all of u.....

Please read the Things that are generally unacceptable and How to ask a question entry as well.

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[anandmms]

Well the code you have, seems like BOTH images should be contained in that memorystream object, so they're both already together.
I would recomend putting some type of deliminator between the two so you can tell them apart when you need to.

As for why you were asked if it was homework problem, please see the Posting Guidelines about how we will not do your homework for you.

Plater, thanks for your reply... and this is not a school home work problem, but i am new to c#.net. i am facing the above problem for past several days and i cant get any proper solution... Could u post...? I need how to save more than one image in a single field(blob) in database

[Plater]

The MemoryStream can do it, you just have to be a bit more sneaky then you would think.

//Here is the main stream
MemoryStream fullstream = new MemoryStream();
 
//dummy stream
MemoryStream ms = new MemoryStream();
Bitmap bm = (Bitmap)Bitmap.FromFile(@"C:\temp.bmp");
bm.Save(ms, ImageFormat.Bmp);    
 
//write one instance of the image
ms.WriteTo(fullstream);
//write another instance of the image
ms.WriteTo(fullstream);
//Now fullstream has 2 images in it (you can verify by the .Length property of the stream)
 
//get the byte[] of two images
byte[] superbuffer=fullstream.ToArray();
 

[anandmms]

The MemoryStream can do it, you just have to be a bit more sneaky then you would think.

//Here is the main stream
MemoryStream fullstream = new MemoryStream();
 
//dummy stream
MemoryStream ms = new MemoryStream();
Bitmap bm = (Bitmap)Bitmap.FromFile(@"C:\temp.bmp");
bm.Save(ms, ImageFormat.Bmp);    
 
//write one instance of the image
ms.WriteTo(fullstream);
//write another instance of the image
ms.WriteTo(fullstream);
//Now fullstream has 2 images in it (you can verify by the .Length property of the stream)
 
//get the byte[] of two images
byte[] superbuffer=fullstream.ToArray();
 

Thanks for your reply Plater,
I checked the codes, but i am getting only one image, even writing into the memory stream(full stream) two times...

could you please explain some more clear...

thanks
anand

[Plater]

Well in my example, I used the same image for each instance.
It was just an example.
You will need to provide your own method for knowing where one image ends and another image begins.