jkb, C# - rextester

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//Rextester.Program.Main is the entry point for your code. Don't change it.
//Compiler version 4.0.30319.17929 for Microsoft (R) .NET Framework 4.5

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using System.Text;

namespace Rextester
{
    public class Program
    {
        public static void Main(string[] args)
        {
            int key = 10;
            string pwd="Hunter12_secret";
            
            
            string a = EncryptDecrypt(pwd,456);
            
            Console.WriteLine(a);
            Console.WriteLine(EncryptDecrypt(a,456));
        }
         public static string EncryptDecrypt(string szPlainText, int szEncryptionKey)  
         {  
               StringBuilder szInputStringBuild = new StringBuilder(szPlainText);  
               StringBuilder szOutStringBuild = new StringBuilder(szPlainText.Length);  
               char Textch;  
               for (int iCount = 0; iCount < szPlainText.Length; iCount++)  
               {  
                 Textch = szInputStringBuild[iCount];  
                 Textch = (char)(Textch ^ szEncryptionKey);  
                 szOutStringBuild.Append(Textch);  
               }  
               return szOutStringBuild.ToString();  
         }  
        #region Class to CSV
        public static IEnumerable<string> ToCsv<T>(IEnumerable<T> objectlist, string separator = ",", bool header = true)
        {
            FieldInfo[] fields = typeof(T).GetFields();
            PropertyInfo[] properties = typeof(T).GetProperties();
            if (header)
            {
                yield return String.Join(separator, fields.Select(f => f.Name).Concat(properties.Select(p=>p.Name)).ToArray());
            }
            foreach (var o in objectlist)
            {
                yield return string.Join(separator, fields.Select(f=>(f.GetValue(o) ?? "").ToString())
                    .Concat(properties.Select(p=>(p.GetValue(o,null) ?? "").ToString())).ToArray());
            }
        }
        
        //using (TextWriter tw = File.CreateText("C:\testoutput.csv"))
        //{
        //    foreach (var line in ToCsv(objects))
        //    {
        //        tw.WriteLine(line);
        //    }
        //}
        #endregion
    }
}

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