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Increment file everytime script is called C#

I am calling this script from a unity project. At this point what I am trying to do is increment the file every time the script is called.
So once it is called it reads the data saves the data in a file.
Right now it only makes a file alpha0.csv and doesn't print a new file if I call the script again.
Can anyone guide me on how to fix this issue.
using UnityEngine;
using System;
using System.Collections;
using System.IO.Ports;
using System.IO;
using System.Management;
using Microsoft.Win32;
using System.Collections.Generic;
public class ArduinoControl : MonoBehaviour
{
SerialPort arduino;
public string portName = "COM5";
public static bool status ;
public string test = "alpha";
private static int counter;
private static int lineCount;
private static string receivedstring = string.Empty;
void Start()
{
arduino = new SerialPort(portName, 115200);
arduino.Open();
status = true;
}
void Update()
{
if (arduino.IsOpen)
{
if (status) // (& UnityCommand = "F")
{
arduino.Write("s");
arduino.ReadTimeout = 5000;
arduino.WriteTimeout = 5000;
receivedstring += arduino.ReadLine() + "\r\n";
arduino.BaseStream.Flush();
lineCount++;
if(lineCount >= 10 && receivedstring != null)
{
WriteOutputToTextFile(test,receivedstring); // Write to csv here...
status = false;
}
arduino.BaseStream.Flush();
}
}
}
//private static int counter;
static void WriteOutputToTextFile(string path,string _data)
{
string FolderName = Environment.GetFolderPath(Environment.SpecialFolder.Desktop); //set destination as your desktop
using (StreamWriter SW = new StreamWriter($"{FolderName }\\{path}{counter}.csv", false))
{
SW.WriteLine(_data);
SW.Close();
}
counter++;
lineCount = 0;
receivedstring = string.Empty;
}
}

If i understand correctly you want to create a new file with the correct numerical suffix, as in alpha0.csv, alpha1.csv, alpha2.csv...
This can actually be a bit of a pain to do, you could use a variable in a wider scope as comments suggest but as you are saving this to disk I assume you want this to work correctly even between starting and stopping your program.
I would suggest
Make sure all your files are in their own folder
Read in all of the file names
Run a 'find max' algorithm on the suffixes in your folder
Add 1 to this and use that to create your new file
Reading in file names can be done in Unity like so:
DirectoryInfo dir = new DirectoryInfo("/*your directory*/");
FileInfo[] fileInfos = dir.GetFiles("*.csv");
Then for getting the next suffix
static readonly string rootName = "Alpha";
int maxFileNumber = 0;
foreach (var f in fileInfos)
{
string tempName = f.Name;
tempName = tempName.Substring(0, tempName.Length - ".csv".Length); // remove .csv
int lengthOfNumber = tempName.Length - rootName.Length; // get the length of the number at the end of the name
nextFileNumber = int.Parse(tempName.Substring(rootName.Length, lengthOfNumber)); // get the number at the end of the name
maxFileNumber = nextFileNumber > maxFileNumber ? nextRoomNumber : maxRoomNumber; // find max alorithm
}
nextFileNumber += 1; // next number
string newFileName = rootName + ToString(nextFileNumber)+".csv";

How I can access a file with c#? [duplicate]

This question already has answers here:
How to read an entire file to a string using C#?
(17 answers)
Closed 3 years ago.
There are some function that read all text from file without use FileStream class and more easy?
In microsoft doc found this code to read from file but I think is some complexed.
private async void Button_Click_1(object sender, RoutedEventArgs e)
{
string filename = #"C:\Example\existingfile.txt";
char[] result;
StringBuilder builder = new StringBuilder();
using (StreamReader reader = File.OpenText(filename))
{
result = new char[reader.BaseStream.Length];
await reader.ReadAsync(result, 0, (int)reader.BaseStream.Length);
}
foreach (char c in result)
{
if (char.IsLetterOrDigit(c) || char.IsWhiteSpace(c))
{
builder.Append(c);
}
}
FileOutput.Text = builder.ToString();
}

Please see the File.ReadAllText Method.
public static void Main()
{
string path = #"c:\temp\MyTest.txt";
// This text is added only once to the file.
if (!File.Exists(path))
{
// Create a file to write to.
string createText = "Hello and Welcome" + Environment.NewLine;
File.WriteAllText(path, createText, Encoding.UTF8);
}
// This text is always added, making the file longer over time
// if it is not deleted.
string appendText = "This is extra text" + Environment.NewLine;
File.AppendAllText(path, appendText, Encoding.UTF8);
// Open the file to read from.
string readText = File.ReadAllText(path);
Console.WriteLine(readText);
}

Counting the # of lines in a very large file gives System OutofMemory Exception [duplicate]

This question already has answers here:
What's the fastest way to read a text file line-by-line?
(9 answers)
Closed 5 years ago.
static void Main(string[] args)
{
string TheDataFile = "";
string ErrorMsg = "";
string lngTransDate = "";
ProcessDataFile ProcessTheDataFile = new ProcessDataFile();
string TheFile = "S:\\MIS\\Provider NPI file\\Processed\\npidata_20050523-20161009.csv";
string[] lines = File.ReadAllLines(TheFile, Encoding.UTF8);//Read all lines to an array
Console.WriteLine(lines.Length.ToString());
Console.ReadLine();
}
This throws an error because the file is very large (has 6 million lines). Is there a way to handle large files and count the # of lines?

Use a StreamReader:
string TheFile = "S:\\MIS\\Provider NPI file\\Processed\\npidata_20050523-20161009.csv";
int count = 0;
using (System.IO.StreamReader sr = new System.IO.StreamReader(TheFile))
{
while (sr.ReadLine() != null)
count++;
}

You need to do a lazy evaluation of the file so it isn't loaded into memory entirelly.
Helper method
public static class ToolsEx
{
public static IEnumerable<string> ReadAsLines(this string filename)
{
using (var streamReader = new StreamReader(filename))
while (!streamReader.EndOfStream)
yield return streamReader.ReadLine();
}
}
Usage
var lineCount = "yourfile.txt".ReadAsLines().Count();

According to this already accepted answer, this should do it.
using System;
using System.IO;
namespace CountLinesInFiles_45194927
{
class Program
{
static void Main(string[] args)
{
int counter = 0;
foreach (var line in File.ReadLines("c:\\Path\\To\\File.whatever"))
{
counter++;
}
Console.WriteLine(counter);
Console.ReadLine();
}
}
}

How can i split a text file in many files but the separation would be a specific string? [closed]

Closed. This question needs details or clarity. It is not currently accepting answers.
Want to improve this question? Add details and clarify the problem by editing this post.
Closed 8 years ago.
Improve this question
I´m trying to split a big text file in many files, but each 600-700-900 lines (could be less or more) I have a string that says "Finished File", how can I do it using C#?

Here's an example that should work for you.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace ConsoleApplicationExample
{
class Program
{
static void Main(string[] args)
{
Runner r = new Runner();
r.SplitFile(#"C:\path\to\my\file.txt");
}
}
public class Runner
{
private readonly string m_delimiter;
public Runner()
{
m_delimiter = "Finished File";
}
public void SplitFile(string inputFile)
{
try
{
StreamReader reader = new StreamReader(inputFile);
StreamWriter writer;
int i = 1; // count up for every output file, auto-numbering from 1
string line;
do
{
string outputFile = GenerateFileName(inputFile, i);
writer = new StreamWriter(outputFile);
while ((line = reader.ReadLine()) != null)
{
if (line.CompareTo(m_delimiter) == 0)
{
writer.Close();
break; // breaking will exit the while-loop & increment i to build a new output file name
}
else
writer.WriteLine(line);
}
i++;
} while (line != null);
writer.Close();
}
catch (Exception ex)
{
Console.WriteLine("Error splitting file: " + ex.ToString());
}
}
private string GenerateFileName(string inputFile, int i)
{
string folder = Path.GetFullPath(inputFile);
string fileNameNoExt = Path.GetFileNameWithoutExtension(inputFile);
string ext = Path.GetExtension(inputFile);
return folder + fileNameNoExt + "." + i.ToString("000") + ext; // zero-pads "000"
}
}
}

Unable to open CSV file from website [duplicate]

This question already has answers here:
Closed 11 years ago.
Possible Duplicate:
Unable to open CSV file from internet using C#
I wrote this code to open and parse a CSV file. It works when I open the file from a folder on my hard drive. I changed the code on lines 24 - 26 to open the file from a website.
I'm getting the error message "URI formats are not supported" from Line 27 of attached code. I can open the file using VBA.
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Net;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
//
// Read in a file line-by-line, and store it all in a List.
//
int i = 0;
DateTime dte;
List<string> list = new List<string>();
float[] Prices = new float[4];
WebClient wc = new WebClient();
byte[] data = wc.DownloadData("http://www.datasource.com/apps/qt/csv/pricehistory.ac?section=yearly_price_download&code=XXX");
using (StreamReader reader = new StreamReader(wc))
{
string line;
while ((line = reader.ReadLine()) != null)
{
//list.Add(line); // Add to list.
Console.WriteLine(line); // Write to console.
string[] parts = line.Split(',');
int DateSetter = 1;
int DateDone = 0;
int CountFloat = 0;
int PricesDone = 0;
Double Volume = 0;
foreach (string part in parts)
{
Console.WriteLine("{0} : {1}", i, part);
if (DateSetter == 1)
{
dte = DateTime.Parse(part);
DateSetter = 2;
Console.WriteLine(dte);
}
if (DateDone == 1)
{
if (DateSetter < 6)
{
Prices[CountFloat] = float.Parse(part);
CountFloat++;
DateSetter++;
Console.WriteLine(Prices[3]);
}
}
DateDone = 1;
if (PricesDone == 1)
{
Volume = double.Parse(part);
Console.WriteLine(Volume);
}
if (DateSetter == 6)
{
PricesDone = 1;
}
}
}
}
Console.ReadLine();
}
}
}

You can just replace
byte[] data = wc.DownloadData
With
String data = wc.DownloadString
In case your request is not really big. And this will simplify all program.