How to append a file on website

[joe_pool_is]

I used to append a file using Classic ASP on my website.

 

I finally migrated parts over to .NET, but I can't seem to find out how to append a file. I can still determine if the file exists using File.Exists, but I don't know how to fill it!

      if (File.Exists(strPath) == true) {
       FileStream fs = null;
       try {
         fs = File.Open(strPath, FileMode.Append);
         char[] data = historyMsg.ToCharArray();
         byte[] bdat = new byte[2 * data.Length];
         for (int i = 0; i < (2 * data.Length); i++) {
           // how do I fill this part???
         }
         fs.Write(bdat, 0, bdat.Length);
       } catch (Exception err) {
         Response.Write("<b>Unable to append to log file: <font color=\"red\">" + err.Message + "</font></b><br/><br/>");
         ok = false;
       } finally {
         if (fs != null) {
           fs.Close();
         }
       }

[PlausiblyDamp]

Once you have opened the file stream you could either use it's Write method or a possibly even easier way would be to open a StreamWriter over the FileStream and use it to write the string(s) directly.

[joe_pool_is]

I had to look up how to use StreamWriter, but you're right! It was MUCH easier!

 

My code is now simply:

if (File.Exists(strPath) == true) {
 using (StreamWriter sw = File.AppendText(strPath)) {
   sw.Write(historyMsg);
   sw.WriteLine("<hr>");
 }
}

Thank you! Again, I owe you a cup of coffee!