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How can I write and read a text doucument in a folder?

string curetn = Environment.CurrentDirectory;
string path = curetn.ToString() + #"\DATA\SaveGame.txt";
Console.WriteLine(path);
TextReader tr = new StreamReader(path);
Hello, I am making a text-adventure, and I do not like having all my save files, and mp3 file in the same place as my application. I would like for the files to be in a folder. I want to be able to use StreamWriter and StreamReader, to be able to write and read files that are in a folder. This file is also in a distributable folder, not just in the Visual Studios Projects folders. I have tried everything I can, and this is what I have. I also have one of these for StreamWriter. Please help!
Edit:
The thing that does not work, is that it does not read the lines, and assigns them to a variable. I have it in a try-catch, and it catches, and displays the error message that I wrote.

If you are looking for simply read and write lines from file you can try this
using (StreamReader sr = new StreamReader(path))
{
while (!sr.EndOfStream)
{
sr.ReadLine();
}
}
string s;
using (StreamWriter sw = new StreamWriter(path))
{
sw.WriteLine(s);
}

So basically what you want to do is read the text file:
string data[] = File.ReadAllLines(path); // Read the text file.
var x = data[1]; // Replace the '1' with the line number you want.
Console.WriteLine(x);
This is a good way to read the text file, I think it's better than opening a stream.
You can also write to it, so every time you want to save, just do this:
// When you want to write:
File.WriteAllText(path, "");
File.AppendAllText(path, "Add a data line" + Environment.NewLine); // Environment.NewLine adds a line.
Keep appending text to the file for the data you need.

Find regex in file with StreamReader and overwrite it with StreamWriter

I am reading text file with StreamReader and doing Regex.Match to find specific info, now when I found it I want to replace it with Regex.Replace and I want to write this replacement back to the file.
this is text inside my file:
///
/// <Command Name="Press_Button" Comment="Press button" Security="Security1">
///
/// <Command Name="Create_Button" Comment="Create button" Security="Security3">
/// ... lots of other Commands
now I need to find : Security="Security3"> in Create_Button command, change it to Security="Security2"> and write it back to the file
do {
// read line by line
string ReadLine = InfoStreamReader.ReadLine();
if (ReadLine.Contains("<Command Name"))
{
// now I need to find Security1, replace it with Security2 and write back to the file
}
}
while (!InfoStreamReader.EndOfStream);
any ideas are welcome...
EDITED:
Good call was from tnw to read and write to the file line by line. Need an example.

I'd do something more like this. You can't directly write to a line in the file like you're describing there.
This doesn't use regex but accomplishes the same thing.
var fileContents = System.IO.File.ReadAllText(#"<File Path>");
fileContents = fileContents.Replace("Security1", "Security2");
System.IO.File.WriteAllText(#"<File Path>", fileContents);
Pulled pretty much directly from here: c# replace string within file
Alternatively, you could loop thru and read your file line-by-line and write it line-by-line to a new file. For each line, you could check for Security1, replace it, and then write it to the new file.
For example:
StringBuilder newFile = new StringBuilder();
string temp = "";
string[] file = File.ReadAllLines(#"<File Path>");
foreach (string line in file)
{
if (line.Contains("Security1"))
{
temp = line.Replace("Security1", "Security2");
newFile.Append(temp + "\r\n");
continue;
}
newFile.Append(line + "\r\n");
}
File.WriteAllText(#"<File Path>", newFile.ToString());
Source: how to edit a line from a text file using c#

With StreamWriter doesn't work \n (C#)

I have a problem with the C# Stream Writer.
I use the following Code:
//Constructor
public EditorTXTFile
{
FileStream f = File.Create(System.IO.Directory.GetCurrentDirectory() + "\\Output.txt");
f.Close();
}
//Function AddText
public void AddLogFileText(string text)
{
string text = "l1\n\rl2\n\rl3\n\nl5";
StreamWriter writer = new StreamWriter(System.IO.Directory.GetCurrentDirectory() + "\\Output.txt", true);
writer.Write(text);
writer.Close();
}
When I open Output.txt it shows for \n or \r a █(which means not showable symbol) and the whole string is in one line...
Later should the text hand over the function, so I can't write the text with .WriteLine because I don't know if the actual string is on the same line or in a new line.
What make I wrong?
Thanks for any help.

Use Environment.NewLine as line separator or "\r\n" if you want to do it by hand.

Line Separator(newLine) is \r\n not \n\r,
change your text as :
string text = "l1\r\nl2\r\nl3\r\nl5";

Try string text = #"l1\n\rl2\n\rl3\n\nl5";. To prevent character stuffing.

This is binary format:
writer.Write(text);
This is line sequential format:
writer.WriteLine(text);
You have to use WriteLine format...

You can use Environment.NewLine like this:
streamWriter.Write(String.Concat(Enumerable.Repeat(Environment.NewLine, n).ToArray()));

i tried to write a class and seprate "\n"s
but i found rich text box!!
yeah! it works:
RichTextBox rch = new RichTextBox();
rch.Text = cmn;
foreach (string l in rch.Lines)
strw.WriteLine(l);

C# method to read text error log file

I am trying to read a file I create that contains all the logs lines throughout my program. I have the following cod:
private string ReadEmailLog(string EmailLog)
{
TextReader tr = new StreamReader(EmailLog);
tr.ReadLine();
tr.Close();
}
I need to read the EmailLog file, every line of it, and then put return it into a string called message. How would I get this method to return the whole log file, every line?

You can use File.ReadAllText or File.ReadAllLines.
If you're using .NET 4.0, you can also use File.ReadLines:
var files = from file in Directory.EnumerateFiles(#"c:\",
"*.txt", SearchOption.AllDirectories)
from line in File.ReadLines(file)
where line.Contains("Microsoft")
select new
{
File = file,
Line = line
};
foreach (var f in files)
{
Console.WriteLine("{0}\t{1}", f.File, f.Line);
}
This allows you to make file I/O part of a LINQ operation.

Try
tr.ReadToEnd();
which will return a string that contains all the content of your file.
TextReader.ReadToEnd Method
If you want to get the lines in a string[], then
tr.ReadToEnd().Split("\n");
should do it, while it will separate the lines to the "\n" character, which represents a carriage return and line feed combined characters (new line character).

simply use:
String text = tr.ReadToEnd();

You can read all the contents or the log and return it. For example:
private string void ReadEmailLog(string EmailLog)
{
using(StreamReader logreader = new StreamReader(EmailLog))
{
return logreader.ReadToEnd();
}
}
Or if you want each line one at a time:
private IEnumerable<string> ReadEmailLogLines(string EmailLog)
{
using(StreamReader logreader = new StreamReader(EmailLog))
{
string line = logreader.ReadLine();
while(line != null)
{
yield return line;
}
}
}

tr.ReadToEnd(); //read whole file at once
// or line by line
While ( ! tr.EOF)
tr.ReadLine()//

How to open a large text file in C#

I have a text file that contains about 100000 articles.
The structure of file is:
.Document ID 42944-YEAR:5
.Date 03\08\11
.Cat political
Article Content 1
.Document ID 42945-YEAR:5
.Date 03\08\11
.Cat political
Article Content 2
I want to open this file in c# for processing it line by line.
I tried this code:
String[] FileLines = File.ReadAllText(
TB_SourceFile.Text).Split(Environment.NewLine.ToCharArray());
But it says:
Exception of type
'System.OutOfMemoryException' was
thrown.
The question is How can I open this file and read it line by line.
File Size: 564 MB (591,886,626 bytes)
File Encoding: UTF-8
File contains Unicode characters.

You can open the file and read it as a stream rather than loading everything into memory all at once.
From MSDN:
using System;
using System.IO;
class Test
{
public static void Main()
{
try
{
// Create an instance of StreamReader to read from a file.
// The using statement also closes the StreamReader.
using (StreamReader sr = new StreamReader("TestFile.txt"))
{
String line;
// Read and display lines from the file until the end of
// the file is reached.
while ((line = sr.ReadLine()) != null)
{
Console.WriteLine(line);
}
}
}
catch (Exception e)
{
// Let the user know what went wrong.
Console.WriteLine("The file could not be read:");
Console.WriteLine(e.Message);
}
}
}

Your file is too large to be read into memory in one go, as File.ReadAllText is trying to do. You should instead read the file line by line.
Adapted from MSDN:
string line;
// Read the file and display it line by line.
using (StreamReader file = new StreamReader(#"c:\yourfile.txt"))
{
while ((line = file.ReadLine()) != null)
{
Console.WriteLine(line);
// do your processing on each line here
}
}
In this way, no more than a single line of the file is in memory at any one time.

If you are using .NET Framework 4, there is a new static method on System.IO.File called ReadLines that returns an IEnumerable of string. I believe it was added to the framework for this exact scenario; however, I have yet to use it myself.
MSDN Documentation - File.ReadLines Method (String)
Related Stack Overflow Question - Bug in the File.ReadLines(..) method of the .net framework 4.0

Something like this:
using (var fileStream = File.OpenText(#"path to file"))
{
do
{
var fileLine = fileStream.ReadLine();
// process fileLine here
} while (!fileStream.EndOfStream);
}