Simple File System Watcher in C#

In this article I describe the usage of the FileSystemWatcher controller provided by .Net Framework , using C#

More information about FileSystemWatcher In C# is here..

Source Code :

using System;
using System.Text;
using System.Security.Permissions;
using System.IO;
namespace FileSystemWatcherC
{
class Program
{
static FileSystemWatcher watcher = null;
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
static void Main(string[] args)
{
Console.ForegroundColor = ConsoleColor.White;
Console.BackgroundColor = ConsoleColor.Black;
string[] argsx = System.Environment.GetCommandLineArgs();
Console.Title = "Egle Eye";
int len = argsx.Length;
/*
* Helper cordings...
*
* Console.WriteLine(len.ToString());
foreach (string s in argsx)
{
Console.Write(s + " ");
}
*/
if (len < 2)
{
DrawHelperScreen();
}
else
{
try
{
watcher = new FileSystemWatcher();
watcher.BeginInit();
watcher.IncludeSubdirectories = true;
SetFileTypes(string.Empty);
SetArgs(argsx);
}
catch (Exception ex)
{
Console.ForegroundColor = ConsoleColor.Red;
Console.BackgroundColor = ConsoleColor.Black;
Console.WriteLine("");
Console.WriteLine(ex.Message);
Console.WriteLine("");
Console.ForegroundColor = ConsoleColor.White;
Console.BackgroundColor = ConsoleColor.Black;
return;
}
}
}
private static void SetWorkinfDirecotory(string path)
{
watcher.Path = path;
}
private static void SetArgs(string[] args)
{
if (args.Length > 1)
{
SetWorkinfDirecotory(args[1]);
}
if (args.Length > 2)
{
SetWachingEvents(args[2]);
}
else { SetWachingEvents(""); }
if (args.Length > 3)
{
SetFileTypes(args[3]);
}
if (args.Length > 4)
{
if (args[4].ToLower() == "false")
watcher.IncludeSubdirectories = false;
}
/*
* Helper cordings...
*
* Console.WriteLine(watcher.Path);
Console.WriteLine(watcher.Filter);
Console.WriteLine(watcher.IncludeSubdirectories.ToString()); */
StartWatcher();
}
private static void SetWachingEvents(string filterEvents)
{
string[] values = filterEvents.Split(',');
foreach (string s in values)
{
switch (s)
{
case "ch": watcher.Changed += new FileSystemEventHandler(OnChanged); break;
case "cr": watcher.Created += new FileSystemEventHandler(OnChanged); break;
case "de": watcher.Deleted += new FileSystemEventHandler(OnChanged); break;
case "rn": watcher.Renamed += new RenamedEventHandler(OnRenamed); break;
default:
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnRenamed);
break;
}
}
}
private static void SetFileTypes(string filetypes)
{
if (filetypes != String.Empty)
watcher.Filter = filetypes;
else watcher.Filter = "*.*";
}
private static void DrawHelperScreen()
{
//Console.Clear();
Console.ForegroundColor = ConsoleColor.DarkCyan;
Console.WriteLine("");
Console.WriteLine("");
Console.WriteLine(@"╔══════════════════════════Usage══════════════════════════╗");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ EgleEye [Waching directory] - Ex C:\ ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ Filter: ch[Change],de[Delete],cr[Created],rn[Rename] ║");
Console.WriteLine("║ If no arguments with file path watch all events. ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ EgleEye C:\ ch,de,cr,rn ║");
Console.WriteLine(@"║ EgleEye C:\ ch,de,cr ║");
Console.WriteLine(@"║ EgleEye C:\ ch,de ║");
Console.WriteLine(@"║ EgleEye C:\ ch ║");
Console.WriteLine(@"║ EgleEye C:\ ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ EgleEye [File Types *.* = all , *.txt = text ] ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ File Types *recipe.doc ║");
Console.WriteLine(@"║ File Types *.txt ║");
Console.WriteLine(@"║ File Types pass*.* ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ Include Include Subdirectories for the search:off ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ Subdirectories default ON ║");
Console.WriteLine(@"║ To desable it set args: false ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ Usage : ║");
Console.WriteLine(@"║ EgleEye C:\ ch,de,cr,rn *.* false ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"║ **NOTE : To exit press 'q' and Hit Enter ║");
Console.WriteLine("║ ║");
Console.WriteLine(@"╚══════════════════════════Usage══════════════════════════╝");
return;
}
[PermissionSet(SecurityAction.Demand, Name = "FullTrust")]
public static void StartWatcher()
{
watcher.NotifyFilter = NotifyFilters.LastAccess |
NotifyFilters.LastWrite |
NotifyFilters.FileName |
NotifyFilters.DirectoryName |
NotifyFilters.Attributes |
NotifyFilters.Security;
watcher.EndInit();
watcher.EnableRaisingEvents = true;
Console.WriteLine("Press \'q\' and hit Enter to Exit.....");
while (Console.Read() != 'q') ;
}
private static void OnChanged(object source, FileSystemEventArgs e)
{
switch (e.ChangeType)
{
case WatcherChangeTypes.Changed:
Console.BackgroundColor = ConsoleColor.Black;
Console.ForegroundColor = ConsoleColor.DarkGreen;
break;
case WatcherChangeTypes.Created:
Console.BackgroundColor = ConsoleColor.Yellow;
Console.ForegroundColor = ConsoleColor.Black;
break;
case WatcherChangeTypes.Deleted:
Console.BackgroundColor = ConsoleColor.DarkRed;
Console.ForegroundColor = ConsoleColor.Cyan;
break;
}
WriteFullLine(e.ChangeType + " : " + e.FullPath, e);
}
private static void OnRenamed(object source, RenamedEventArgs e)
{
Console.ForegroundColor = ConsoleColor.DarkCyan;
Console.BackgroundColor = ConsoleColor.Black;
Console.WriteLine("");
Console.Write("Renamed :");
Console.WriteLine(" File Old : " + e.OldFullPath);
Console.WriteLine(" File New : " + e.FullPath);
Console.WriteLine("");
}
static void WriteFullLine(string value, FileSystemEventArgs e)
{
Console.WriteLine(value.PadRight(Console.WindowWidth - 1));
}
}
}

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