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    <p>Is this .NET 4.0?</p> <p>If so <a href="http://msdn.microsoft.com/en-us/library/dd782932.aspx" rel="nofollow noreferrer">Stream.CopyTo</a> is probably your best bet.</p> <p>If not, and to give credit where credit is due, see the answer in <a href="https://stackoverflow.com/questions/230128/best-way-to-copy-between-two-stream-instances-c">this SO thread.</a> If you're not .NET 4.0 make sure to read the comments in that thread as there are some alternative solutions (<a href="https://stackoverflow.com/questions/1540658/net-asynchronous-stream-read-write">Async stream reading/writing</a>) that may be worth investigating if performance is at an absolute premium which may be your case.</p> <p>EDIT:</p> <p>Based off the update, are you trying to copy the file to another remote destination? (Just guessing based on GetRequestStream() [<a href="http://msdn.microsoft.com/en-us/library/system.net.webrequest.getrequeststream.aspx" rel="nofollow noreferrer">GetRequestStream()</a>]. The time is going to be the actual transfer of the file content to the destination. So in this case when you do fs.CopyTo(strm) it has to move those bytes from the source stream to the remote server. That's where the time is coming from. You're literally doing a file upload of a huge file. CopyTo will block your processing until it completes.</p> <p>I'd recommend looking at spinning this kind of processing off to another task or at the least look at the asynchronous option I listed. You can't really avoid this taking a large period of time. You're constrained by file size and available upload bandwidth.</p> <p>I verified that when working <em>locally</em> CopyTo is sub-second. I tested with a half gig file and a quick Stopwatch class returned a processing time of 800 millisecondss.</p>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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