I am trying to convert an image to an byte array (tobytes() method) and from
byte array back to an image (frombytes() method). The problem i have here is
say the image size is 285 bytes but the total bytes is 635. I know it would
include the header but the header should be the same size regardless of the
image size. I tested the other image size of 407 bytes and the total bytes
array is 727. I am not sure what is wrong? your help would be appreciate
it.

What is the image size and total size? How do you calculate the image size?


--
Stoitcho Goutsev (100)

"piggy" <(E-Mail Removed)> wrote in message
news:6FED606A-BD1F-4F8C-B6F2-(E-Mail Removed)...
>I am trying to convert an image to an byte array (tobytes() method) and
>from
> byte array back to an image (frombytes() method). The problem i have here
> is
> say the image size is 285 bytes but the total bytes is 635. I know it
> would
> include the header but the header should be the same size regardless of
> the
> image size. I tested the other image size of 407 bytes and the total
> bytes
> array is 727. I am not sure what is wrong? your help would be appreciate
> it.

Hi,

What is the problem with a variable size?

Just handle the entire array as one entity.

You can you use a MemoryStream to convert to/from byte


--
--
Ignacio Machin,
ignacio.machin AT dot.state.fl.us
Florida Department Of Transportation


"piggy" <(E-Mail Removed)> wrote in message
news:6FED606A-BD1F-4F8C-B6F2-(E-Mail Removed)...
>I am trying to convert an image to an byte array (tobytes() method) and
>from
> byte array back to an image (frombytes() method). The problem i have here
> is
> say the image size is 285 bytes but the total bytes is 635. I know it
> would
> include the header but the header should be the same size regardless of
> the
> image size. I tested the other image size of 407 bytes and the total
> bytes
> array is 727. I am not sure what is wrong? your help would be appreciate
> it.

If you have an image, you can have a file. If you have a file you have
a filestream. If you have a filestream you can get an array of bytes.
You might have to mess around with what streams you need, probably a
mix of FileStream and MemoryStream.

Ignacio Machin ( .NET/ C# MVP ) wrote:
> Hi,
>
> What is the problem with a variable size?
>
> Just handle the entire array as one entity.
>
> You can you use a MemoryStream to convert to/from byte
>
>
> --
> --
> Ignacio Machin,
> ignacio.machin AT dot.state.fl.us
> Florida Department Of Transportation
>
>
> "piggy" <(E-Mail Removed)> wrote in message
> news:6FED606A-BD1F-4F8C-B6F2-(E-Mail Removed)...
> >I am trying to convert an image to an byte array (tobytes() method) and
> >from
> > byte array back to an image (frombytes() method). The problem i have here
> > is
> > say the image size is 285 bytes but the total bytes is 635. I know it
> > would
> > include the header but the header should be the same size regardless of
> > the
> > image size. I tested the other image size of 407 bytes and the total
> > bytes
> > array is 727. I am not sure what is wrong? your help would be appreciate
> > it.

piggy wrote:

> I am trying to convert an image to an byte array (tobytes() method) and
> from
> byte array back to an image (frombytes() method). The problem i have here
> is
> say the image size is 285 bytes but the total bytes is 635. I know it
> would include the header but the header should be the same size regardless
> of the
> image size. I tested the other image size of 407 bytes and the total
> bytes
> array is 727. I am not sure what is wrong? your help would be appreciate
> it.

Hi Piggy,

Can you post some code, demonstrating what you are doing, and how you are
obtaining 'image size' and 'total bytes'?

--
Hope this helps,
Tom Spink

Google first, ask later.

Your Image Class sports a Save and a FromStream method, both of which can
work with a stream such as a MemoryStream. MemoryStream class has a
contructor overload that accepts a byte array, and it has a ToArray method
that gives you back a byte array. The header (Jpeg, gif, etc is simply part
of this array and you should not need to worry about it at all.
Hope that helps,
Peter

--
Co-founder, Eggheadcafe.com developer portal:
http://www.eggheadcafe.com
UnBlog:
http://petesbloggerama.blogspot.com




"piggy" wrote:

> I am trying to convert an image to an byte array (tobytes() method) and from
> byte array back to an image (frombytes() method). The problem i have here is
> say the image size is 285 bytes but the total bytes is 635. I know it would
> include the header but the header should be the same size regardless of the
> image size. I tested the other image size of 407 bytes and the total bytes
> array is 727. I am not sure what is wrong? your help would be appreciate
> it.

The problem is that we try to send as small as package size over the network
as possible. I am just curious. If that is how it works and there are no
ways to fix it then have to accept it. Thanks for your comments.

"Peter Bromberg [C# MVP]" wrote:

> Your Image Class sports a Save and a FromStream method, both of which can
> work with a stream such as a MemoryStream. MemoryStream class has a
> contructor overload that accepts a byte array, and it has a ToArray method
> that gives you back a byte array. The header (Jpeg, gif, etc is simply part
> of this array and you should not need to worry about it at all.
> Hope that helps,
> Peter
>
> --
> Co-founder, Eggheadcafe.com developer portal:
> http://www.eggheadcafe.com
> UnBlog:
> http://petesbloggerama.blogspot.com
>
>
>
>
> "piggy" wrote:
>
> > I am trying to convert an image to an byte array (tobytes() method) and from
> > byte array back to an image (frombytes() method). The problem i have here is
> > say the image size is 285 bytes but the total bytes is 635. I know it would
> > include the header but the header should be the same size regardless of the
> > image size. I tested the other image size of 407 bytes and the total bytes
> > array is 727. I am not sure what is wrong? your help would be appreciate
> > it.

i don't calculate the image size. I just check the image size from window
explorer. Is there a way to do it?

"Stoitcho Goutsev (100)" wrote:

> What is the image size and total size? How do you calculate the image size?
>
>
> --
> Stoitcho Goutsev (100)
>
> "piggy" <(E-Mail Removed)> wrote in message
> news:6FED606A-BD1F-4F8C-B6F2-(E-Mail Removed)...
> >I am trying to convert an image to an byte array (tobytes() method) and
> >from
> > byte array back to an image (frombytes() method). The problem i have here
> > is
> > say the image size is 285 bytes but the total bytes is 635. I know it
> > would
> > include the header but the header should be the same size regardless of
> > the
> > image size. I tested the other image size of 407 bytes and the total
> > bytes
> > array is 727. I am not sure what is wrong? your help would be appreciate
> > it.
>
>
>

I agree that header is a part of the array but shoudn't it be the same size
regarless of the image size? It will be different depending on the image
type as well.

"piggy" wrote:

> The problem is that we try to send as small as package size over the network
> as possible. I am just curious. If that is how it works and there are no
> ways to fix it then have to accept it. Thanks for your comments.
>
> "Peter Bromberg [C# MVP]" wrote:
>
> > Your Image Class sports a Save and a FromStream method, both of which can
> > work with a stream such as a MemoryStream. MemoryStream class has a
> > contructor overload that accepts a byte array, and it has a ToArray method
> > that gives you back a byte array. The header (Jpeg, gif, etc is simply part
> > of this array and you should not need to worry about it at all.
> > Hope that helps,
> > Peter
> >
> > --
> > Co-founder, Eggheadcafe.com developer portal:
> > http://www.eggheadcafe.com
> > UnBlog:
> > http://petesbloggerama.blogspot.com
> >
> >
> >
> >
> > "piggy" wrote:
> >
> > > I am trying to convert an image to an byte array (tobytes() method) and from
> > > byte array back to an image (frombytes() method). The problem i have here is
> > > say the image size is 285 bytes but the total bytes is 635. I know it would
> > > include the header but the header should be the same size regardless of the
> > > image size. I tested the other image size of 407 bytes and the total bytes
> > > array is 727. I am not sure what is wrong? your help would be appreciate
> > > it.