Hi,
I have a newbie question. Lets say I have a very large file and a key
that says the information I am interested in is from byte 1,000,000 to
byte 1,100,000 in the file. How can I read in the bytes of interest
without reading in the entire file?

Thanks,
Bob

Hi Bob,

Open a Stream and set the position to 1,000,000, then simply Stream.Read
100,000 bytes. Something along the line of

byte[] data = new byte[100000];
using(FileStream fs = new FileStream("MyFile", FileMode.Open))
{
fs.Position = 1000000;
fs.Read(data, 0, data.Length);
}


On Tue, 23 Jan 2007 07:40:50 +0100, Bob <(E-Mail Removed)> wrote:

> Hi,
> I have a newbie question. Lets say I have a very large file and a key
> that says the information I am interested in is from byte 1,000,000 to
> byte 1,100,000 in the file. How can I read in the bytes of interest
> without reading in the entire file?
>
> Thanks,
> Bob
>



--
Happy Coding!
Morten Wennevik [C# MVP]

Morten Wennevik [C# MVP] wrote:
> Open a Stream and set the position to 1,000,000, then simply Stream.Read
> 100,000 bytes. Something along the line of
>
> byte[] data = new byte[100000];
> using(FileStream fs = new FileStream("MyFile", FileMode.Open))
> {
> fs.Position = 1000000;
> fs.Read(data, 0, data.Length);
> }

Remembering, of course, to check the return value of Read in case it
didn't manage to read as much data as you asked for

Jon

Beautiful, Thanks so much!

On Jan 23, 2:21 am, "Jon Skeet [C# MVP]" <s...@pobox.com> wrote:
> Morten Wennevik [C# MVP] wrote:
>
> > Open a Stream and set the position to 1,000,000, then simply Stream.Read
> > 100,000 bytes. Something along the line of
>
> > byte[] data = new byte[100000];
> > using(FileStream fs = new FileStream("MyFile", FileMode.Open))
> > {
> > fs.Position = 1000000;
> > fs.Read(data, 0, data.Length);
> > }Remembering, of course, to check the return value of Read in case it
> didn't manage to read as much data as you asked for
>
> Jon