Develop Reference

Using C# how can I split a text file into multiple files

How can I split a text file that contains ASCII code SOH and ETX into multiple files?
For exmaple the text file I have named 001234.txt contains the following content:
SOH{ABCDXZY}ETX
SOH{ABCDXZY}ETX
SOH{ABCDXZY}ETX
I would like to split the single text file into multiple text files for each ASCII code that starts with SOH and ends with ETX.
The single text file name should be splitted into 101234.txt , 111234.txt..etc and each contains a single content that starts with SOH and ends with ETX.
I appreciate any help.
using System.IO;
using System.Linq;
namespace ASCII_Split
{
class Program
{
static void Main(string[] args)
{
var txt = "";
const char soh = (char)1;
const char eox = (char)3;
var count = 1;
var pathToFile = #"‪‪C:\Temp\00599060.txt";
using (var sr = new StreamReader(pathToFile))
txt = sr.ReadToEnd();
while (txt.Contains(soh))
{
var outfil = Path.Combine(Path.GetDirectoryName(pathToFile), count.ToString("000"), "_fix.txt");
var eInd = txt.IndexOf(eox);
using (var sw = new StreamWriter(outfil, false))
{
sw.Write(txt.Substring(1, eInd - 1));
}
txt = txt.Substring(eInd + 1);
count++;
}
}
}
}

This should more or less do the trick:
//Read all text from file into a string
var fileContent = File.ReadAllText("001234.txt");
//split text into array according to a Regex pattern
var pattern = #"SOH*ETX";
var splitContent = Regex.Split(fileContent, pattern);
//counter for file names
var counter = 10;
foreach(var content in splitContent)
{
//create file and use stream to write to it
using (var stream = File.Create($"{counter++}1234.txt"))
{
var contentAsBytes = new UTF8Encoding(true).GetBytes(content);
stream.Write(contentAsBytes, 0, contentAsBytes.Length);
}
}

Provided by SOH and ETX you mean the respective control characters, this here should get you on your way:
var txt = "";
const char soh = (char) 1;
const char eox = (char) 3;
var count = 1;
var pathToFile = #"C:\00_Projects_temp\test.txt";
using (var sr = new StreamReader(pathToFile))
txt = sr.ReadToEnd();
while (txt.Contains(soh))
{
var outfil = Path.Combine(Path.GetDirectoryName(pathToFile), count.ToString("000"), "_test.txt");
var eInd = txt.IndexOf(eox);
using (var sw = new StreamWriter(outfil, false))
{
sw.Write(txt.Substring(1, eInd - 1));
}
txt = txt.Substring(eInd + 1);
count++;
}

Thank you LocEngineer the program works, I did little change to concatonate the filename with the counter using "+" instead of ",".
using System.IO;
using System.Linq;
namespace ASCII_Split
{
class Program
{
static void Main(string[] args)
{
var txt = "";
const char soh = (char)1;
const char eox = (char)3;
var count = 1;
var pathToFile = #"C:\Temp\00599060.txt";
using (var sr = new StreamReader (pathToFile))
txt = sr.ReadToEnd();
if (txt.IndexOf(soh) != txt.LastIndexOf(soh))
{
while (txt.Contains(soh))
{
var outfil = Path.Combine(Path.GetDirectoryName(pathToFile), count.ToString("00") + Path.GetFileName(pathToFile));
var eInd = txt.IndexOf(eox);
using (var sw = new StreamWriter(outfil, false))
{
sw.Write(txt.Substring(1, eInd - 1));
}
txt = txt.Substring(eInd + 1);
count++;
}
File.Move((pathToFile), (pathToFile) + ".org");
}
}
}
}

StreamWriter: Starting and ending on a specific line number

I would like to ask some tips and help on a reading/writing part of my C#.
Situation:
I have to read a CSV file; - OK
If the CSV file name starts with "Load_", I want to write on another CSV the data from line 2 to the last one;
If the CSV file name starts with "RO_", I want to write on 2 different CSVs, 1 with the line 1 to 4 and the other 4 to the last one;
What I have so far is:
public static void ProcessFile(string[] ProcessFile)
{
// Keeps track of your current position within a record
int wCurrLine = 0;
// Number of rows in the file that constitute a record
const int LINES_PER_ROW = 1;
int ctr = 0;
foreach (string filename in ProcessFile)
{
var sbText = new System.Text.StringBuilder(100000);
int stop_line = 0;
int start_line = 0;
// Used for the output name of the file
var dir = Path.GetDirectoryName(filename);
var fileName = Path.GetFileNameWithoutExtension(filename);
var ext = Path.GetExtension(filename);
var folderbefore = Path.GetFullPath(Path.Combine(dir, #"..\"));
var lineCount = File.ReadAllLines(#filename).Length;
string outputname = folderbefore + "output\\" + fileName;
using (StreamReader Reader = new StreamReader(#filename))
{
if (filename.Contains("RO_"))
{
start_line = 1;
stop_line = 5;
}
else
{
start_line = 2;
stop_line = lineCount;
}
ctr = 0;
while (!Reader.EndOfStream && ctr < stop_line)
{
// Add the text
sbText.Append(Reader.ReadLine());
// Increment our current record row counter
wCurrLine++;
// If we have read all of the rows for this record
if (wCurrLine == LINES_PER_ROW)
{
// Add a line to our buffer
sbText.AppendLine();
// And reset our record row count
wCurrLine = 0;
}
ctr++;
} // end of the while
}
int total_lenght = sbText.Length
// When all of the data has been loaded, write it to the text box in one fell swoop
using (StreamWriter Writer = new StreamWriter(dir + "\\" + "output\\" + fileName + "_out" + ext))
{
Writer.Write.(sbText.);
}
} // end of the foreach
} // end of ProcessFile
I was thinking about using the IF/ELSE: "using (StreamWriter Writer = new StreamWriter(dir + "\" + "output\" + fileName + "_out" + ext))" part. However, I am not sure how to pass, to StreamWriter, to only write from/to a specific line number.
Any Help is welcome! If I am missing some information, please, let me know (I am pretty new on stackoverflow).
Thank you.

Code is way too complicated
using System.Collections.ObjectModel;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace ConsoleApplication57
{
class Program
{
static void Main(string[] args)
{
}
public static void ProcessFile(string[] ProcessFile)
{
foreach (string filename in ProcessFile)
{
// Used for the output name of the file
var dir = Path.GetDirectoryName(filename);
var fileName = Path.GetFileNameWithoutExtension(filename);
var ext = Path.GetExtension(filename);
var folderbefore = Path.GetFullPath(Path.Combine(dir, #"..\"));
var lineCount = File.ReadAllLines(#filename).Length;
string outputname = folderbefore + "output\\" + fileName;
using (StreamWriter Writer = new StreamWriter(dir + "\\" + "output\\" + fileName + "_out" + ext))
{
int rowCount = 0;
using (StreamReader Reader = new StreamReader(#filename))
{
rowCount++;
string inputLine = "";
while ((inputLine = Reader.ReadLine()) != null)
{
if (filename.Contains("RO_"))
{
if (rowCount <= 4)
{
Writer.WriteLine(inputLine);
}
if (rowCount == 4) break;
}
else
{
if (rowCount >= 2)
{
Writer.WriteLine(inputLine);
}
}
} // end of the while
Writer.Flush();
}
}
} // end of the foreach
} // end of ProcessFile
}
}

You can use LINQ to Take and Skip lines.
public abstract class CsvProcessor
{
private readonly IEnumerable<string> processFiles;
public CsvProcessor(IEnumerable<string> processFiles)
{
this.processFiles = processFiles;
}
protected virtual IEnumerable<string> GetAllLinesFromFile(string fileName)
{
using(var stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.Read))
using(var reader = new StreamReader(stream))
{
var line = String.Empty;
while((line = reader.ReadLine()) != null)
{
yield return line;
}
}
}
protected virtual void ProcessFiles()
{
var sb1 = new StringBuilder();
var sb2 = new StringBuilder();
foreach(var file in this.processFiles)
{
var fileName = Path.GetFileNameWithoutExtension(file);
var lines = GetAllLinesFromFile(file);
if(fileName.StartsWith("RO_", StringComparison.InvariantCultureIgnoreCase))
{
sb1.AppendLine(lines.Take(4)); //take only the first four lines
sb2.AppendLine(lines.Skip(4).TakeWhile(s => !String.IsNullOrEmpty(s))); //skip the first four lines, take everything else
}
else if(fileName.StartsWith("Load_", StringComparison.InvariantCultureIgnoreCase)
{
sb2.AppendLine(lines.Skip(1).TakeWhile(s => !String.IsNullOrEmpty(s)));
}
}
// now write your StringBuilder objects to file...
}
protected virtual void WriteFile(StringBuilder sb1, StringBuilder sb2)
{
// ... etc..
}
}

Open a txt file using C# and read the numbers on the file

How can I open a .txt file and read numbers separated by enters or spaces into an array list?
Example:
Now what I want to do is to search (for 1 2 9 ) and send to the console.
I have tried a lot of code but nothing seems to work :(
This is my current code :
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.IO;
namespace Padroes
{
class Program
{
static void Main(string[] args)
{
try
{
// Open the text file using a stream reader.
const string FILENAME = #"Example.txt";
List<List<int>> data = new List<List<int>>();
string inputLine = "";
StreamReader reader = new StreamReader(FILENAME);
while ((inputLine = reader.ReadLine()) != null)
{
inputLine = inputLine.Trim();
if (inputLine.Length > 0)
{
List<int> inputArray = inputLine.Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries).Select(x => int.Parse(x)).ToList();
data.Add(inputArray);
Console.WriteLine(inputLine);
}
}
}
catch (Exception e)
{
Console.WriteLine("The file could not be read:");
Console.WriteLine(e.Message);
}
Console.ReadKey();
}
}
}
With this code this is my output:
Now what can I do to search only for ( 1 2 9 ) and send only the 1 2 9 to console ?

I belive this would do the trick.. I simply used a StreamReader and looped throught each line.. Im not sure if i got the part of the condition 100% but if i do it should look somthing like this :
StreamReader file = new StreamReader(#"test.txt");
string line= file.ReadLine();
while(line!=null)
{
if (line.Equals("5 8 1 7"))
MessageBox.Show(line);
line = file.ReadLine();
}
Goodluck.

Try this
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.txt";
static void Main(string[] args)
{
List<List<int>> data = new List<List<int>>();
string inputLine = "";
StreamReader reader = new StreamReader(FILENAME);
while((inputLine = reader.ReadLine()) != null)
{
inputLine = inputLine.Trim();
if (inputLine.Length > 0)
{
List<int> inputArray = inputLine.Split(new char[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(x => int.Parse(x)).ToList();
data.Add(inputArray);
}
}
}
}
}
​

Get value from XML file using C#

I want to fetch only 'Param1' from the below XML file.Please help.With my code it is giving me complete string of values of all attributes under SSIS Parameter Node but t is not giving Param1 in that.
XML File Contents:`
<?xml version="1.0"?>
<SSIS:Parameters xmlns:SSIS="www.microsoft.com/SqlServer/SSIS">
<SSIS:Parameter
SSIS:Name="param1">
<SSIS:Properties>
<SSIS:Property
SSIS:Name="ID">{6fc5a81b-723b-4821-b948-0cbd44d86c84}</SSIS:Property>
<SSIS:Property
SSIS:Name="CreationName"></SSIS:Property>
<SSIS:Property
SSIS:Name="Description"></SSIS:Property>
<SSIS:Property
SSIS:Name="IncludeInDebugDump">0</SSIS:Property>
<SSIS:Property
SSIS:Name="Required">0</SSIS:Property>
<SSIS:Property
SSIS:Name="Sensitive">0</SSIS:Property>
<SSIS:Property
SSIS:Name="Value"></SSIS:Property>
<SSIS:Property
SSIS:Name="DataType">18</SSIS:Property>
</SSIS:Properties>
</SSIS:Parameter>
</SSIS:Parameters>
`
My Code Snippet:
XmlDataDocument xmldoc = new XmlDataDocument();
XmlNodeList xmlnode;
int i = 0;
string str = null;
FileStream fs = new FileStream(#"D:\Sample SSIS\sampleDeploymentDemo\sampleDeploymentDemo\Project.params", FileMode.Open, FileAccess.Read);
xmldoc.Load(fs);
xmlnode = xmldoc.GetElementsByTagName("SSIS:Parameters");
for (i = 0; i <= xmlnode.Count - 1; i++)
{
xmlnode[i].ChildNodes.Item(0).InnerText.Trim();
str = xmlnode[i].InnerText.Trim() + " " + xmlnode[i].ChildNodes.Item(1).InnerText.Trim() + " " + xmlnode[i].ChildNodes.Item(2).InnerText.Trim();
Console.WriteLine(str);
}
Console.ReadLine();

"param1" is attribute. You can get it with followed code:
...
xmlnode = xmldoc.GetElementsByTagName("SSIS:Parameters");
for (i = 0; i <= xmlnode.Count - 1; i++)
{
var val = xmlnode[i].FirstChild.Attributes["SSIS:Name"].Value;
Console.WriteLine(val);
}
Console.ReadLine();
...
See this link

Try XML Linq
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Linq;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = #"c:\temp\test.xml";
static void Main(string[] args)
{
XDocument doc = XDocument.Load(FILENAME);
var results = doc.Descendants().Where(x => x.Name.LocalName == "Parameter").Descendants().Where(y => y.Name.LocalName == "Property").Select(z => new
{
value = z.Attributes().Where(a => a.Name.LocalName == "Name").Select(b => b.Value).FirstOrDefault()
}).ToList();
foreach (var item in results)
{
Console.WriteLine(item.value);
}
}
}
}
​

Counting number of words in a text file

I'm trying to count the number of words from a text file, namely this, to start.
This is a test of the word count program. This is only a test. If your
program works successfully, you should calculate that there are 30
words in this file.
I am using StreamReader to put everything from the file into a string, and then use the .Split method to get the number of individual words, but I keep getting the wrong value when I compile and run the program.
using System;
using System.IO;
class WordCounter
{
static void Main()
{
string inFileName = null;
Console.WriteLine("Enter the name of the file to process:");
inFileName = Console.ReadLine();
StreamReader sr = new StreamReader(inFileName);
int counter = 0;
string delim = " ,.";
string[] fields = null;
string line = null;
while(!sr.EndOfStream)
{
line = sr.ReadLine();
}
fields = line.Split(delim.ToCharArray());
for(int i = 0; i < fields.Length; i++)
{
counter++;
}
sr.Close();
Console.WriteLine("The word count is {0}", counter);
}
}

Try to use regular expression, e.g.:
int count = Regex.Matches(input, #"\b\w+\b").Count;

this should work for you:
using System;
using System.IO;
class WordCounter
{
static void Main()
{
string inFileName = null;
Console.WriteLine("Enter the name of the file to process:");
inFileName = Console.ReadLine();
StreamReader sr = new StreamReader(inFileName);
int counter = 0;
string delim = " ,."; //maybe some more delimiters like ?! and so on
string[] fields = null;
string line = null;
while(!sr.EndOfStream)
{
line = sr.ReadLine();//each time you read a line you should split it into the words
line.Trim();
fields = line.Split(delim.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
counter+=fields.Length; //and just add how many of them there is
}
sr.Close();
Console.WriteLine("The word count is {0}", counter);
}
}

A couple hints.
What if you just have the sentence "hi" what would be your output?
Your counter calculation is: from 0 through fields.Length, increment counter. How are fields.Length and your counter related?

you're probably getting a one off error, try something like this
counter = 0;
while(!sr.EndOfStream)
{
line = sr.ReadLine();
fields = line.Split(delim.ToCharArray());
counter += field.length();
}
there is no need to iterate over the array to count the elements when you can get the number directly

using System.IO;
using System;
namespace solution
{
class Program
{
static void Main(string[] args)
{
var readFile = File.ReadAllText(#"C:\test\my.txt");
var str = readFile.Split(new char[] { ' ', '\n'}, StringSplitOptions.RemoveEmptyEntries);
System.Console.WriteLine("Number of words: " + str.Length);
}
}
}

//Easy method using Linq to Count number of words in a text file
/// www.techhowdy.com
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace FP_WK13
{
static class Util
{
public static IEnumerable<string> GetLines(string yourtextfile)
{
TextReader reader = new StreamReader(yourtextfile);
string result = string.Empty;
string line;
while ((line = reader.ReadLine()) != null)
{
yield return line;
}
reader.Close();
}
// Word Count
public static int GetWordCount(string str)
{
int words = 0;
string s = string.Empty;
var lines = GetLines(str);
foreach (var item in lines)
{
s = item.ToString();
words = words + s.Split(' ').Length;
}
return words;
}
}
}