c# delete a carriage return at the end of a file

[alvoryx]

Hi,

I fail removing some carriage return, (\n\r i guess) from a god file which brings that the software where i'm exporting to is crying..

if i manually remove the CR from notepad, no problem

i'm googling around for nearly 3 hours now on every possible way i can imagine express this but no luck

my idea is to seek to the end of the file and then to make some substring..but no way

so here's my file :

FileStream fs = new FileStream(@"C:\Users\me\Desktop\output2.csv", FileMode.Append, FileAccess.Write);

StreamWriter sw = new StreamWriter(fs);

but now i don't see any kind of subst or trim methods ?!?!?!?!?

or if i try to read it with :

        StreamReader sr = new StreamReader(@"C:\Users\me\Desktop\output2.csv"))
            {
                char[] c = null;

                while (sr.Peek() >= 0)
                {
                    c = new char[2048];
                    sr.Read(c, 0, c.Length);
                }
            }

by adding a breakpoint on the sr.Read(), I can see that the 2 last char's filed are '\n' and '\r'..

but, for godsake how can i delete them ?

please someone..for our planet..before i throw my laptop out of this window

[alvoryx]

I tried also this

string[] str = System.IO.File.ReadAllLines(saveFileDialog1.FileName);

string temp = str[str.Length-1].Replace(@"\r", "").Replace(@"\n", "");

str[str.Length - 1] = temp;

System.IO.File.WriteAllLines(saveFileDialog1.FileName, str);

does not work, CR still there

[Teme64]

Here's how I'd do it

string myFileData;

// File in
myFileData = File.ReadAllText(@"D:\test.csv");
// Remove last CR/LF
// 1) Check that the file has CR/LF at the end
if (myFileData.EndsWith(Environment.NewLine))
{
  // Yes. 2) Remove CR/LF from the end and write back to file (new file)
  // File.WriteAllText(@"D:\test_backup.csv", myFileData.TrimEnd(null)); // Removes ALL white spaces from the end!
  File.WriteAllText(@"D:\test_backup.csv", myFileData.TrimEnd(Environment.NewLine.ToCharArray())); // Removes ALL CR/LF from the end!
}

Here's two solutions. The first one (line 10.) commented out but you can use it if you want to all trailing white spaces trimmed. The code as is removes now CR/LF (or just LF or CR depending on your environment). If there's multiple CR/LF pairs, the code removes all of them from the end, not just the last one.

HTH

[alvoryx]

Hi,

man...i owe you one (my computer also)

THANKS so much that work's :-)

[creiglee]

try these methods....

Regex.Replace(str, @"\t\n\r", "");

Or

str = str.Replace(System.Environment.NewLine, ",");

Or

str = str.Replace(vbLf, [String].Empty)
str = str.Replace(vbCr, [String].Empty)
str = str.Replace(vbTab, [String].Empty)

Full Source......Remove "\r\n" from a string

Lee

[Ahmad_13]

THANKS ...................................THANKS ..........................THANKS
very goooooooooooooooooooooooooooooooooooooooooooooooooooooood