Convert file to base64 string using windows service

See more:

C#

Base64

Hi im trying to convert a file to a base64String and then store that string in a text file. What i am trying to create is a Windows Service - As soon as a file is created in a certain folder.The Service creates a Log file to say that a file has been added to the folder put then it should convert that file into a base64String and store that string in a text file.

EDIT 1:
Im trying to convert a file into a base64String.The code below successfully registers a new file being added to a folder. What im trying to do now is convert that file that has just been added to a base64String and store that string in a separate file. To code to convert to base64String is in the method ConvertToBase64(), That method is being called inside FileSystemWatcher1_Created(). What i have tried can be seen below
I Want to be able convert any file to a base64String that is added to certain folder
My Code

using System;
using System.IO;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Linq;
using System.ServiceProcess;
using System.Text;
using System.Threading.Tasks;
using System.Configuration;
using System.Threading;
using System.Reflection;

namespace WindowsServiceFolderWatcher
{
    public partial class Service1 : ServiceBase
    {
        string WatchPath1 = ConfigurationManager.AppSettings["WatchPath1"];  
        public Service1()
        {
            InitializeComponent();
            fileSystemWatcher1.Created += fileSystemWatcher1_Created;
          

        }

        internal void TestStartupAndStop(string[] args)
        {
            this.OnStart(args);
            Console.ReadLine();
            this.OnStop();
        }
        FileSystemWatcher myWatcher = new FileSystemWatcher();
        protected override void OnStart(string[] args)
        {

            try
            {
                fileSystemWatcher1.Path = WatchPath1;

                
            }
            catch (Exception ex)
            {
                throw ex;
            }  
        }

        protected override void OnStop()
        {
            try
            {
                Create_ServiceStopTextFile();
            }
            catch (Exception ex)
            {

                throw ex;
            } 
        }
        void fileSystemWatcher1_Created(object sender, System.IO.FileSystemEventArgs e)
        {
            try
            {
                Thread.Sleep(7000);
                if(CheckFileExistance(WatchPath1, e.Name))
                {
                    CreateTextFile(WatchPath1, e.Name);
                    ConvertToBase64(/*WatchPath1, e.Name*/);
                   // Copy_Excelfile_And_Paste_at_anotherloaction_OnServiceStart(WatchPath1, e.Name);
                }
            }
            catch(Exception ex)
            {
                throw ex;
            }
        }
        
        private bool CheckFileExistance(string FullPath, string FileName)
        {
            // Get the subdirectories for the specified directory.'  
            bool IsFileExist = false;
            DirectoryInfo dir = new DirectoryInfo(FullPath);
            if (!dir.Exists)
                IsFileExist = false;
            else
            {
                string FileFullPath = Path.Combine(FullPath, FileName);
                if (File.Exists(FileFullPath))
                    IsFileExist = true;
            }
            return IsFileExist;


        }

        private void CreateTextFile(string FullPath, string FileName)
        {

            StreamWriter SW;

            if (!File.Exists(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "txtStatus_" + DateTime.Now.ToString("MMddyyyy") + ".txt")))
            {
                SW = File.CreateText(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "txtStatus_" + DateTime.Now.ToString("MMddyyyy") + ".txt"));
                //SW = File.CreateText(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "txtBase64_" + DateTime.Now.ToString("MMddyyyy") + ".txt"));
                SW.Close();
            }
            using (SW = File.AppendText(Path.Combine(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location), "txtStatus_" + DateTime.Now.ToString("MMddyyyy") + ".txt")))
            {
                SW.WriteLine("File Created with Name: " + FileName + " at this time: " + DateTime.Now.ToString("HH:mm , MM/dd/yyyy"));
                // + FilePath
               
                SW.Close();
            }

           // Copy_Excelfile_And_Paste_at_anotherloaction_OnServiceStart();
        
        }

        public static void ConvertToBase64(/*string FullPath, string FileName*/)
        {

            //First Attempt
            //string tiff = FullPath;
            //FileStream fstream = new FileStream(tiff, FileMode.Open);
            //byte[] original = new byte[fstream.Length];
            //fstream.Read(original, 0, (int)fstream.Length);
            //int fstreamLength = (int)fstream.Length;
            //string tiffBase64 = Convert.ToBase64String(original);

            //StreamWriter writer = new StreamWriter(@"C:\\Users\\username\\Desktop\\Base64\\SampleBase64.txt");
            //writer.Write(tiffBase64);
            //writer.Close();
            //fstream.Close();

            //Second Attempt
            using (System.IO.Stream s = new System.IO.FileStream(@"C:\\Users\\username\\Desktop\\Ball.jpg", System.IO.FileMode.Open, System.IO.FileAccess.Read))
            {
                var bytes = StreamHelper.ReadToEnd(s);

                var string64 = Convert.ToBase64String(bytes);

                //Console.WriteLine(/*"Size " +*/ string64);
                File.WriteAllBytes(@"C:\\Users\\username\\Desktop\\Base64\\Base.txt", Convert.FromBase64String(string64));
                //var bytes2 = Convert.FromBase64String(string64);
                //bytes.WriteAllBytes(@"C:\Users\username\Desktop\output24.pdf", bytes2);

               

            }


        

        }

        public static void Create_ServiceStopTextFile()
        {
            string Destination = "C:\\Users\\username\\Desktop\\FileWatcherWinService";
            StreamWriter SW;
            if (Directory.Exists(Destination))
            {
                Destination = System.IO.Path.Combine(Destination, "txtServiceStop_" + DateTime.Now.ToString("yyyyMMdd") + ".txt");
                if (!File.Exists(Destination))
                {
                    SW = File.CreateText(Destination);
                    SW.Close();
                }
            }
            using (SW = File.AppendText(Destination))
            {
                SW.Write("\r\n\n");
                SW.WriteLine("Service Stopped at: " + DateTime.Now.ToString("dd-MM-yyyy H:mm:ss"));
                SW.Close();
            }

        }

        public static void Copy_Excelfile_And_Paste_at_anotherloaction_OnServiceStart()
        {
            try
            {
                string source = "C:\\Users\\username\\Desktop\\Documents";
                string Destination = "C:\\Users\\username\\Desktop\\Destination";
                string filename = string.Empty;
                if (!(Directory.Exists(Destination) && Directory.Exists(source)))
                    return;
                string[] Templateexcelfile = Directory.GetFiles(source);
                foreach (string file in Templateexcelfile)
                {
                    if (file.Contains("Excel"))
                    {
                        filename = System.IO.Path.GetFileName(file);
                        Destination = System.IO.Path.Combine(Destination, filename.Replace(".xlsx", DateTime.Now.ToString("yyyyMMdd")) + ".xlsx");
                        System.IO.File.Copy(file, Destination, true);
                    }
                }

            }
            catch (Exception ex)
            {
                Create_ServiceStopTextFile();
            }

        }
        internal void DebugMode()
        {
            this.OnStart(null);
        }
    }
}

What I have tried:

  //First Attempt
            //string tiff = FullPath;
            //FileStream fstream = new FileStream(tiff, FileMode.Open);
            //byte[] original = new byte[fstream.Length];
            //fstream.Read(original, 0, (int)fstream.Length);
            //int fstreamLength = (int)fstream.Length;
            //string tiffBase64 = Convert.ToBase64String(original);

            //StreamWriter writer = new StreamWriter(@"C:\\Users\\username\\Desktop\\Base64\\SampleBase64.txt");
            //writer.Write(tiffBase64);
            //writer.Close();
            //fstream.Close();

//Second Attempt
            using (System.IO.Stream s = new System.IO.FileStream(@"C:\\Users\\username\\Desktop\\Ball.jpg", System.IO.FileMode.Open, System.IO.FileAccess.Read))
            {
                var bytes = StreamHelper.ReadToEnd(s);

                var string64 = Convert.ToBase64String(bytes);

                //Console.WriteLine(/*"Size " +*/ string64);
                File.WriteAllBytes(@"C:\\Users\\username\\Desktop\\Base64\\Base.txt", Convert.FromBase64String(string64));
                //var bytes2 = Convert.FromBase64String(string64);
                //bytes.WriteAllBytes(@"C:\Users\username\Desktop\output24.pdf", bytes2);

               

            }