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How to extract specific string from a text?

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using Newtonsoft.Json;
namespace Rename_Files
{
public partial class Form1 : Form
{
string[] files;
public Form1()
{
InitializeComponent();
files = Directory.GetFiles(#"C:\Program Files (x86)\Steam\steamapps\common\King's Quest\Binaries\Win\Saved Games", "*.*", SearchOption.AllDirectories);
for(int i = 2; i < files.Length; i++)
{
string text = File.ReadAllText(files[i]);
int startPos = text.IndexOf("currentLevelName");
int length = text.IndexOf("currentLevelEntryDirection") - 3;
string sub = text.Substring(startPos, length);
}
}
private void Form1_Load(object sender, EventArgs e)
{
}
}
}
The part i want to extract is :
currentLevelName":"E1_WL1_FindBow_M","currentLevelEntryDirection"
This is a part of the file content :
m_ItemsEncodedJsons ArrayProperty None ! m_WhatLevelPlayerIsAtEncodedJson ArrayProperty O G {"currentLevelName":"E1_WL1_FindBow_M","currentLevelEntryDirection":8} & m_WhatCheckPointPlay
the way i'm trying now i'm getting exception because
System.ArgumentOutOfRangeException: 'Index and length must refer to a location within the string.
Parameter name: length'
startPos value is : 1613 and the value of length is 1653
so the exception is logic but i'm not sure yet how to extract the specific string out of the text.
Update :
this is almost working :
int startPos = text.IndexOf("currentLevelName");
int length = text.IndexOf("currentLevelEntryDirection");
string sub = text.Substring(startPos, length - startPos);
the result in sub is :
"currentLevelName\":\"E1_WL1_HangingBedsA_M\",\""
but i want that sub will contain this :
currentLevelName"E1_WL1_HangingBedsA_M\"
optional without the two "" either and maybe to add _
currentLevelName_"E1_WL1_HangingBedsA_M\"
or
currentLevelName_E1_WL1_HangingBedsA_M\

The problem you are facing is indeed this one:
How to extract the content with specific pattern from a String?
In this case, you can use Regular Expression to extract the content you want.
Given the following text:
m_ItemsEncodedJsons ArrayProperty None ! m_WhatLevelPlayerIsAtEncodedJson ArrayProperty O G {"currentLevelName":"E1_WL1_FindBow_M","currentLevelEntryDirection":8} & m_WhatCheckPointPlay
By using this Regex pattern:
string pattern = #"""currentLevelName"":"".*"",""currentLevelEntryDirection"":\d+";
You will be able to extract the following content:
"currentLevelName":"E1_WL1_FindBow_M","currentLevelEntryDirection":8
Here is the code snippet in C#:
using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
// this is the original text
string input = #"m_ItemsEncodedJsons ArrayProperty None ! m_WhatLevelPlayerIsAtEncodedJson ArrayProperty O G {""currentLevelName"":""E1_WL1_FindBow_M"",""currentLevelEntryDirection"":8} & m_WhatCheckPointPlay";
// this is the pattern you are looking for
string pattern = #"""currentLevelName"":"".*"",""currentLevelEntryDirection"":\d+";
RegexOptions options = RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
One of the reasons you should use Regex in this case is that, if the value of currentLevelEntryDirection is not single-digit, e.g. 8123, the above code snippet can still be able to extract the correct value.
You can also find the above example and edit it here: https://regex101.com/r/W4ihuk/3
Furthermore, you can extract the property names and values by using capturing group. For example:
string pattern = #"""(currentLevelName)"":""(.*)"",""(currentLevelEntryDirection)"":(\d+)";
You can extract the following data:
currentLevelName, E1_WL1_FindBow_M, currentLevelEntryDirection, 8 and you can get the values by looping all the Match objects.

it seems the content is separated by a space delimiter. and the positions are fixed.
If so, you could do something like :
var splitted = text.Split(' ');
var json = splitted[8]; // this is the json part in the content;
However, since we don't know wither the content might change or not. You can still use this :
var startPos = text.IndexOf('{');
var endPos = text.IndexOf('}') + 1;
var json = text.Substring(startPos, endPos - startPos);
This would extract the Json part of the file. Now, you can implement a json model that will be used to deserialize this json like this :
using System.Text.Json;
using System.Text.Json.Serialization;
public class JsonModel
{
[JsonPropertyName("currentLevelName")]
public string? CurrentLevelName { get; set; }
[JsonPropertyName("currentLevelEntryDirection")]
public int CurrentLevelEntryDirection { get; set; }
}
With that we can do :
var result = JsonSerializer.Deserialize<JsonModel>(json);
var leveName = result.CurrentLevelName;

private string FindCurrentLevelName(string MyString)
{
var FirstSplit = MyString.Split(new char[] { '{' },
StringSplitOptions.RemoveEmptyEntries);
if (FirstSplit.Length != 2)
{
return "";
}
var SecondSplit = FirstSplit[1].Split(new char[] { '}' },
StringSplitOptions.RemoveEmptyEntries);
if (SecondSplit.Length != 2)
{
return "";
}
var FinalSplit = SecondSplit[0].Split(new char[] { '"' },
StringSplitOptions.RemoveEmptyEntries);
if (FinalSplit.Length != 6)
{
return "";
}
return FinalSplit[2];
}

To get the specific string pattern in a non-JSON format data string
Use the regex to get the stirng and operate it will be good I thought.
By using the regex pattern: "currentLevelName":"\w+"
in your example content, your will get: "currentLevelName":"E1_WL1_HangingBedsA_M"
Then use the result to create or replace your file name.
the code below will get the savedGame001.txt's content and extract the currentLevelName block, then create a new file whcih the name is in this format: [filename]_[theCurrentLevelName]
using System.Text.RegularExpressions;
// your file path
string filePath = #"C:\Users\a0204\Downloads";
// your file name
string fileName = #"savedGame001.txt";
// read file content
string stringContent = string.Empty;
stringContent = System.IO.File.ReadAllText(filePath + "\\" + fileName);
// Get the mathced string By regex => "currentLevelName":"\w+"
var regex = new Regex("\"currentLevelName\":\"\\w+\"");
Match matched = regex.Match(stringContent);
string matchedString = matched.Value;
// Get the string below the colon
int colonPosition = matchedString.IndexOf(":");
string value = matchedString.Substring(colonPosition + 1);
value = value.Replace("\"", string.Empty);
// remove the .txt and add the matched string to file name
fileName = fileName.Remove(fileName.Length - 4, 4);
string newFileName = fileName + "_" + value;
// check the new file name
Console.WriteLine(newFileName);
// write content to new file name
FileStream fileStream = File.Create(filePath + "\\" + newFileName);
fileStream.Dispose();
File.WriteAllText(filePath + "\\" + newFileName, stringContent);
Console.ReadLine();
PS: the code was written by .NET6 console app

Writing values from dictionary object to text file only writing last key value pair

I don't know C# or any programming that well at all, but I want to learn. I've been searching online last couple days to put together what is supposed to read from 2 text files and output a file (formatted for a json file that I'll just copy/paste into that file). So I can read from two files, create a dictionary object and write to a file but it's only writing the last item. I believe I'm overwriting over and over until the last part. How do I append to the file rather than overwrite?
My code:
using System.IO;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
namespace WriteLangFile
{
class Program
{
static void Main(string[] args)
{
try
{
string path1 = #"C:\temp\langVars.txt";
string path2 = #"C:\temp\langValues.txt";
string[] readVars = File.ReadAllLines(path1);
string[] readVals = File.ReadAllLines(path2);
Dictionary<string, string> dictionaryVars = new Dictionary<string, string>();
for (int i = 0; i < readVars.Length; i++)
{
dictionaryVars.Add(readVars[i], readVals[i]);
}
string outputPath = ("C:\\temp\\");
string outputFileName = ("lang.txt");
string constant, value;
foreach (KeyValuePair<string, string> kvp in dictionaryVars)
{
constant = (kvp.Key);
value = (kvp.Value);
string[] lines = { ("\"LANG_\"" + constant + "\"_LANG \"" + " : { "),
("\"translations\" : {"),
("\"Lang.asp\" : {"),
("\"eng\"" + ": \"" + value + "\""),
("}"),
("}"),
("},")
};
using (StreamWriter outFile = new StreamWriter(Path.Combine(outputPath, outputFileName)))
{
foreach (var item in lines)
{
outFile.WriteLine(item.ToString());
}
}
}
}
catch (Exception e)
{
Console.WriteLine("Exception: " + e.Message);
}
finally
{
Console.WriteLine("Executing finally block.");
}
}
}
}

Your issue is that you're opening/closing the file within the loop, and you're not using the constructor of StreamWriter that takes the append option.
The best solution is probably to move StreamWriter creation outside of the loop so that you only open the file once:
using (StreamWriter outFile = new StreamWriter(Path.Combine(outputPath, outputFileName)))
{
foreach (KeyValuePair<string, string> kvp in dictionaryVars)
{
constant = (kvp.Key);
value = (kvp.Value);
string[] lines = { ("\"LANG_\"" + constant + "\"_LANG \"" + " : { "),
("\"translations\" : {"),
("\"Lang.asp\" : {"),
("\"eng\"" + ": \"" + value + "\""),
("}"),
("}"),
("},")
};
foreach (var item in lines)
{
outFile.WriteLine(item.ToString());
}
}
}
For completeness, if you were to keep the StreamWriter creation within the loop, you could construct it like this so that it appends rather than overwriting the file:
using (StreamWriter outFile = new StreamWriter(Path.Combine(outputPath, outputFileName), append: true))
P.S. It looks like you might be trying to generate a file with JSON inside it. At present your code does not generate valid JSON. If you want to generate JSON, you should use a serializer such as JSON.NET rather than building the JSON manually (i.e. in an error-prone way).

How to read a specific line and text from a text file

string lot = "RU644276G01";
var year = "201" + lot.Substring(2, 1);
var folder = #"\\sinsdn38.ap.infineon.com\ArchView\03_Reports\" + year +
#"\" + lot.Substring(3, 2) + #"\" + lot.Substring(0,8) + #"\";
DirectoryInfo di = new DirectoryInfo(folder);
foreach (var fi in di.GetFiles("*.TLT"))
{
var file = fi.FullName;
string line;
using (StreamReader sr = new StreamReader(file))
{
while ((line = sr.ReadLine()) != null)
{
if (line.StartsWith("TEST-END"))
{
timeStampTextBox.Text = line;
}
}
}
This is my code currently.
I want to read from a specific line (for example line 8) and the line starts with "Test-End". However, line 8 contains all these
"TEST-END : 2017-01-08 15:51 PROGRAM : TLE8888QK-B2 BAU-NR : 95187193"
but I only want to read "2017-01-98 15:51".
How do I change my code to get that? Currently I'm getting the whole line instead of the specific timestamp that I want.
Edit
How do I change the code such that the string lot =" " can be any number, meaning it does not need to be RU644276G01, it can be a different number which will be typed by users. I have created a textbox for users to input the number.

You extract the text. It seems quite regular pattern, so regular expressions should be able to help:
using System;
using System.Text.RegularExpressions;
public class Program
{
public static void Main()
{
var line = "TEST-END : 2017-01-08 15:51 PROGRAM : TLE8888QK-B2 BAU-NR : 95187193";
Regex re = new Regex(#"^(?:TEST-END : )(.*?\d{4}-\d{2}-\d{2} \d{2}:\d{2})");
var match = re.Match(line);
Console.WriteLine(match.Groups[1]);
Console.ReadLine(); // leave console open
}
}
Output:
2017-01-08 15:51 // this is group 1, group 0 is the full capture including TEST-END :
Use this to check it in regexr: https://regexr.com/3l1sf if you hover about the text it will diplay your capturing groups
The regex means:
^ start of the string
(?:TEST-END : ) non capturing group, text must be present
( a group
.*? as few (0-n) anythings as possible
\d{4}-\d{2}-\d{2} \d{2}:\d{2} 4 digits-2 digits-2digits 2digits:2digits
) end of group
More about regular expressions:
RegEx-Class
a regex Tester (one of many, the one I use): https://regexr.com/

Here is my answer using Regular Expressions.
if (line.StartsWith("TEST-END"))
{
Regex re = new Regex(#"\d{4}-\d{2}-\d{2} \d{2}:\d{2}");
var match = re.Match(line);
if(m.Success)
{
timeStampTextBox.Text = match.Value;
}
}
Output: 2017-01-08 15:51

you can split the line with ":", like this
var value = line.split(':');
and get your date like this.
var date = value[1] + ":" + value[2].Replace("PROGRAM", "");
above statement means
date = "2017-01-98 15" + ":" + "51"
if (line.StartsWith("TEST-END"))
{
var value = line.split(':');
var date = value[1] + ":" + value[2].Replace("PROGRAM", "");
timeStampTextBox.Text = date;
}
This is not the best answer, it depends on exactly the statement you had given.

I finally got all three parameters out of the last line
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
namespace ConsoleApplication1
{
class Program
{
static void Main(string[] args)
{
Dictionary<string, string> dict = new Dictionary<string, string>();
string pattern = #"(?'name'[^\s]+)\s:\s(?'value'[\w\s\-]*|\d{4}-\d{2}-\d{2}\s\d{2}:\d{2})";
string line = "TEST-END : 2017-01-08 15:51 PROGRAM : TLE8888QK-B2 BAU-NR : 95187193";
MatchCollection matches = Regex.Matches(line, pattern, RegexOptions.RightToLeft);
foreach (Match match in matches)
{
Console.WriteLine("name : '{0}', value : '{1}'", match.Groups["name"].Value, match.Groups["value"].Value);
dict.Add(match.Groups["name"].Value, match.Groups["value"].Value);
}
DateTime date = DateTime.Parse(dict["TEST-END"]);
Console.ReadLine();
}
}
}

Writing into .txt file without erasing previous data C#

I am trying to split a string in a .txt-file by commas (,) into a string[] and then replacing every item of the string[] to another formula, for example:
"Marko Kostic, Faculty of Technical Sciences, University of Novi Sad,
Trg D. Obradovica 6, 21125 Novi Sad, Serbia"
I want to split this string by commas in between the words and then I want to put every value in separate line like a list and then changing every value with another like "Marko Kostic" to be
<addr-line>Marko Kostic<\addr-line>
The problem is the writer wrote only the last value of string[] and erase the previous values.
Any suggestions?
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Text.RegularExpressions;
using Microsoft.Office.Interop;
using Microsoft.Office.Interop.Word;
using System.Diagnostics;
using System.Reflection;
using System.Collections;
using System.Runtime.InteropServices;
namespace AffiliationParser
{
class Program
{
static void Main(string[] args)
{
Microsoft.Office.Interop.Word.Application oWord = new Microsoft.Office.Interop.Word.Application();
object missing = System.Reflection.Missing.Value;
object isVisible = false;
using (StreamReader batch = new StreamReader(#"D:\Developing\REF\AffiliationParser\AffiliationParser\AffiliationParser\bin\Debug\Run.bat"))
{
string bat;
while (!batch.EndOfStream)
{
bat = batch.ReadLine();
// do your processing with batch command
if (bat == "pause")
{
continue;
}
string fpath = bat.Substring(bat.IndexOf(" \""));
string path = fpath.Replace("\"", "").Replace(" ","");
string[] name = Directory.GetFiles(path, "*.txt");
string words = name.Min();
string word = words.Substring(words.LastIndexOf("\\")).Replace("\\", "");
Console.WriteLine("Processing........");
Console.WriteLine(word);
string Npath = path + #"\Arr" + word;
if (File.Exists(Npath))
{
System.Windows.Forms.MessageBox.Show("The file Arr" + word + " alredy exist in " + path);
continue;
}
else
{
File.Copy(words, Npath);
StreamReader temp = new StreamReader(Npath, Encoding.UTF8);
string tempstring = temp.ReadToEnd();
string[] temp3 = tempstring.Split(',');
temp.Close();
foreach (string item in temp3)
{
string Nitem = item.TrimStart().TrimEnd();
//Match MatchCont = Regex.Match(Nitem, #"Afganistan|Albania|Algeria|American\s+Samoa|Andorra|Angola|Anguilla|Antarctica|Antigua\s+and\s+Barbuda|Argentina|Armenia|Aruba|Australia|Austria|Azerbaijan|Bahamas|Bahrain|Bangladesh|Barbados|Belarus|Belgium|Belize|Benin|Bermuda|Bhutan|Bolivia|Bosnia\s+and\s+Herzegovina|Botswana|Bouvet\s+Island|Brazil|British\s+Indian\s+Ocean\s+Territory|Brunei\s+Darussalam|Bulgaria|Burkina\s+Faso|Burundi|Cambodia|Cameroon|Canada|Cape\s+Verde|Cayman\s+Islands|Central\s+African\s+Republic|Chad|Chile|China|Christmas\s+Island|Cocos\s+\(Keeling\)\s+Islands|Colombia|Comoros|Democratic\s+People's\s+Republic\s+of\s+Korea|Democratic\s+Republic\s+of\s+Congo|Cook\s+Islands|Costa\s+Rica|Cote\s+D'Ivoire|Croatia|Cuba|Cyprus|Czech\s+Republic|Republic\s+of\s+Korea|Denmark|Djibouti|Dominica|Dominican\s+Republic|East\s+Timor|Ecuador|Egypt|El\s+Salvador|Equatorial\s+Guinea|Eritrea|Estonia|Ethiopia|Falkland\s+Islands\s+\(Malvinas\)|Faroe\s+Islands|Fiji|Finland|France\s+Metropolitan|France|French\s+Guiana|French\s+Polynesia|French\s+Southern\s+Territories|Gabon|Gambia|Georgia|Germany|Ghana|Gibraltar|Greece|Greenland|Grenadaf|Guadeloupe|Guam|Guatemala|Guinea|Guinea\-Bissau|Guyana|Haiti|Heard\s+Island\s+and\s+McDonald\s+Island|Honduras|Hong\s+Kong|Hungary|Iceland|India|Indonesia|Iran|Iraq|Ireland|Northern\s+Ireland|Isle\s+Of\s+Man|Israel|Italy|Jamaica|Japan|Jordan|Kazakhstan|Kenya|Kiribati|Kuwait|Kyrgyzstan|Lao\s+People'S\s+Democratic\s+Republic|Latvia|Lebanon|Lesotho|Liberia|Libya|Liechtenstein|Lithuania|Luxembourg|Macau|Macedonia|Madagascar|Malawi|Malaysia|Maldives|Mali|Malta|Marshall\s+Islands|Martinique|Mauritania|Mauritius|Mayotte|Mexico|Micronesia|Moldova|Monaco|Mongolia|Montserrat|Morocco|Mozambique|Myanmar|Namibia|Nauru|Nepal|Netherlands\s+Antilles|New\s+Caledonia|New\s+Zealand|Nicaragua|Nigeria|Niger|Niue|Norfolk\s+Island|Northern\s+Mariana\s+Islands|Norway|Oman|Pakistan|Palau|Palestine|Panama|Papua\s+New\s+Guinea|Paraguay|Peru|Philippines|Pitcairn|Poland|Portugal|Puerto\s+Rico|Qatar|Reunion|Romania|Russia|Rwanda|Saint\s+Kitts\s+and\s+Nevis|Saint\s+Lucia|Saint\s+Vincent\s+and\s+The\s+Grenadines|Samoa|San\s+Marino|Sao\s+Tome\s+and\s+Principe|Saudi\s+Arabia|Scotland|Senegal|Serbia|Kosovo|Montenegro|Seychelles|Sierra\s+Leone|Singapore|Slovakia|Slovenia|Solomon\s+Islands|Somalia|South\s+Africa|South\s+Georgia\s+and\s+The\s+South\s+Sandwich\s+Islands|Spain|Sri\s+Lanka|St.\s+Helena|St.\s+Pierre\s+and\s+Miquelon|Sudan|Suriname|Svalbard\s+and\s+Jan\s+Mayen\s+Islands|Swaziland|Sweden|Switzerland|Syria|Taiwan|Tajikistan|Tanzania|Thailand|The\s+Netherlands|Togo|Tokelau|Tonga|Trinidad\s+and\s+Tobago|Tunisia|Turkey|Turkmenistan|Turks\s+and\s+Caicos\s+Islands|Tuvalu|Uganda|Ukraine|United\s+Arab\s+Emirates|UAE|UK|United\s+States\s+Minor\s+Outlying\s+Islands|Uruguay|USA|Uzbekistan|Vanuatu|Vatican\s+City\s+State\s+\(Holy\s+See\)|Venezuela|Vietnam|British\s+Virgin\s+Islands|USA\s+Virgin\s+Islands|Wallis\s+and\s+Futuna\s+Islands|Western\s+Sahara|West\s+Indies|Yemen|Zambia|Zimbabwe|Abkhazia|Afghanistan|Akrotiri\s+and\s+Dhekelia|Aland|Ascension\s+Island|The\s+Bahamas|Brunei|Central\s+Africa|Cocos|Congo|Cote\s+d'lvoire|Czech|Dominican|Falkland\s+Islands|Cambia,\s+The|Grenada|Guemsey|Isle\s+of\s+Man|Jersey|Korea|Laos|Macao|Nagorno\-Karabakh|Netherlands|Northern\s+Cyprus|Pitcaim\s+Islands|Sahrawi\s+Arab\s+Democratic|Saint\-Barthelemy|Saint\s+Helena|Saint\s+Martin|Saint\s+Pierre\s+and\s+Miquelon|Saint\s+Vincent\s+and\s+Grenadines|Samos|Somaliland|South\s+Ossetia|Svalbard|Transnistria|Tristan\s+da\s+Cunha|United\s+Kingdom|Vatican\s+City|Virgin\s+Islands|Wallis\s+and\s+Futuna|Espa�a|Witsch|United\s+States|Prague\s+Czech\s+Republic", RegexOptions.Singleline | RegexOptions.Compiled | RegexOptions.ExplicitCapture | RegexOptions.IgnoreCase);
//if (MatchCont.Success==true)
//{
// MatchCont.Result(#"<country>" + Nitem + #"<\country>");
//}
}
}
}
}
}
}
}

Try to include code in you question, it's not a best practice to simply hand out answers. That being said, you'll want to look at the String.Split method, String.Trim and the File.AppendText method.
Simple ways to do this:
string[] stuff = data.Split(',');
StreamWriter sW = File.AppendText(pathToFile);
foreach(string parts in stuff)
{
sW.WriteLine(parts.Trim());
}
Very, very basic, and not giving you the answer without some work on your part. Good luck!
Here's some references: File.AppendText and String.Trim

string input="a,b,c,d";
string [] parts=input.Split(",",StringSplitOptions.RemoveEmptyEntries);
List<string> output=new List<string>();
foreach(string s in parts)
{
// do sth you like;
var newStr="<abc>"+s+"</abc>";
output.Add(newStr);
}
return output.ToArray();

How to encode strings for Regular Expression in .NET?

I need to dynamically build a Regex to catch the given keywords, like
string regex = "(some|predefined|words";
foreach (Product product in products)
regex += "|" + product.Name; // Need to encode product.Name because it can include special characters.
regex += ")";
Is there some kind of Regex.Encode that does this?

You can use Regex.Escape. For example:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
public class Test
{
static void Main()
{
string[] predefined = { "some", "predefined", "words" };
string[] products = { ".NET", "C#", "C# (2)" };
IEnumerable<string> escapedKeywords =
predefined.Concat(products)
.Select(Regex.Escape);
Regex regex = new Regex("(" + string.Join("|", escapedKeywords) + ")");
Console.WriteLine(regex);
}
}
Output:
(some|predefined|words|\.NET|C\#|C\#\ \(2\))
Or without the LINQ, but using string concatenation in a loop (which I try to avoid) as per your original code:
string regex = "(some|predefined|words";
foreach (Product product)
regex += "|" + Regex.Escape(product.Name);
regex += ")";