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Having an issue with StreamWriter

I am using StreamWriter to write out a file that I'm reading in using File.ReadAllLines. This file is a little over 2MB in size and my issue is that when I go to look at the file that StreamWriter has created, it is not complete. I have stopped the code towards the end and parsed my way through and it is getting to the last lines (of the original file) and running normally through the code....ie. hitting the wr.Write(s.tostring());

Is there something I am missing that won't allow StreamWriter to complete the entire file? Do I need to increase the BufferSize when initializing the StreamWriter? Any help would be appreciated.

StreamWriter wr = new StreamWriter("C:\\Test.inx", true);

            if (FileUploadCompleted(txtPrepressFile.Text))
                processed = true;
            try
            {
                if (processed)
                {                    
                    string[] AllContent = File.ReadAllLines(txtPrepressFile.Text);

                    foreach (string s in AllContent)
                    {
                        wr.WriteLine(s.ToString());
                    }
                }
            }
            catch (Exception f)
            {
                clsGlobal.ErrorLog(f.ToString());
            }

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ASKER CERTIFIED SOLUTION

Avodah

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lazyberezovsky

Isn't it better to use
File.Copy(txtPrepressFile.Text, "C:\\Test.inx");
?

drunk_irishman

ASKER

Well, I dumbed down my code a little for this purpose. There's more to it, some processing is going to take place but I needed to confirm that what I'm putting in, I am also getting out.

lazyberezovsky

Then, yes best way is dispose stream via 'using' statement.

Avodah

What is the result of closing the stream? The above example gave two ways to do this.

DaTribe

drunk_irishman

ASKER

So far, I have used the
wr.Flush();
wr.Close();

and that seemed to work on just taking what's coming in and pushing it right back out. My first run of actually changing some data and verifying data, it did not work. So I am now going to try the using block.

drunk_irishman

ASKER

It also take about 20 minutes for the code to run when I'm doing all the data processing. I'll report results asap.

Avodah

If the data being written is not what is expected then double check that the updated data is what is being sent to the StreamWriter.

wr.Flush();
wr.Close();

or

wr.Close()

or

using(StreamWriter wr = new StreamWr....)
{
}

all do the same thing. No need to try that.

DaTribe

drunk_irishman

ASKER

Ok, the Flush and Close did take care of it.

Thank you very much for your help, both of you!