file.copy method issue in c#.net

Question

0.00/5 (No votes)

See more:

Hi all,

Please help me, i have issue with file.copy method. Issue is, when i upload the file from file upload control at first time it's work proper but next time i use the same control to copy the new file, its work for small size file, but grater than existing file size its not copy on server.

Thanks in advance......

Posted 18-Feb-13 18:29pm

dA.d

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

_Amy · Answer 1 · 2013-02-18T18:54:00

File.Copy() is not good for copying LARGE files. This works great normally and you can do status bars and all kinds of stuff when using it, however, it was clearly not designed to work gracefully with large files. Instead of that, you can go ahead with asynch file copying.

C#

public void CopyFile(string source, string dest)
{
    using (FileStream sourceStream = new FileStream(source, FileMode.Open))
    {
        byte[] buffer = new byte[64 * 1024]; // Change to suitable size after testing performance
        using (FileStream destStream = new FileStream(dest, FileMode.Create))
        {
            int i;
            while ((i = sourceStream.Read(buffer, 0, buffer.Length)) > 0)
            {
                destStream.Write(buffer, 0, i);
                OnProgress(sourceStream.Position, sourceStream.Length);
            }
        }
    }
}

--Amit