Saving unicode characters as "“" into a file; C#

I have an xml file (converted from xfdl) which contains something like:

<custom:popUp xfdl:compute="toggle(activated,'off','on') == '1' ? viewer.messageBox('o Once you click ..... page.&#xD;o When you use the &#x201C;Create &#x201D; function in.......Portal.','Information'):''">

I load it and save it using...

XmlDocument xmlOut = new XmlDocument(); //note: not read only
FileStrea开发者_JS百科m outfs = new FileStream(tempOutXmlFileName, FileMode.Open, FileAccess.Read,
                           FileShare.ReadWrite);
xmlOut.Load(outfs);
xmlOut.Save(tempOutXmlFileName);
outfs.Close();

This process converts some of the unicode instructions into actual characters which completely messes up the xml/xfdl parsing as there are now quotation marks where quotation marks shouldn't be.

Does anybody know a way I can save the file with all the lovely “ characters intact?

Thank you.

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Well, after fiddling around for a bit and getting the xml->xfdl conversion working better, I ran into a new problem.

The solution below seems to work and all the parsing of the xml is correct, but the program to read the xfdl file doesn't seem to like when I encode it using UTF-8 and wants the encoding to be ISO-8859-1.

Any ideas?

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Using StreamReader and StreamWriter should help. To be clear you are trying to read from and write to the same file? I added some nice using statements aswell.

        XmlDocument xmlOut = new XmlDocument(); 
        //note: not read only
        using (FileStream outfs = new FileStream(tempOutXmlFileName, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
        using (StreamReader reader = new StreamReader(outfs, Encoding.UTF8))
        {
            xmlOut.Load(reader);
        }

        using (StreamWriter writer = new StreamWriter(tempOutXmlFileName, false, Encoding.UTF8))
        {
            xmlOut.Save(writer);
        }

I set append to false in the StreamWriter, seems to make sense.

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Turns out that reading and writing the files byte by byte solved the problem since the writer never got the opportunity to do any interpretation on the content.