In .NET 8, the FileSystemWatcher.cs functionality seems to be malfunctioning. To address this issue, I've developed a custom solution packaged as 'Custom.Net8.FileSystemWatcher'.It offers functionality akin to FileSystemWatcher.
I can guide you on how you might structure such a custom implementation.
Step 1. Set Up Your Project. I have used the WPF project for it.
Step 2. Add a Necessary NuGet Package like the one below.
![NuGet Package]()
Step 3. Implement View for handling different requests like below.
<Window x:Class="WpfAppTester.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfAppTester"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid>
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<TextBox x:Name="TxtBxDemo" Grid.Row="0" BorderBrush="LightBlue" BorderThickness="4" Margin="5"/>
<StackPanel Orientation="Horizontal" Grid.Row="1">
<Button x:Name="BtnFileCreated" FontSize="15" Content="File Created" Width="200" Click="BtnFileCreated_Click" Margin="5"/>
<Button x:Name="BtnFileModified" FontSize="15" Content="File Modified" Width="200" Click="BtnFileModified_Click" Margin="5"/>
<Button x:Name="BtnFileDeleted" FontSize="15" Content="File Deleted" Width="200" Click="BtnFileDeleted_Click" Margin="5"/>
<Button x:Name="BtnFileRenamed" FontSize="15" Content="File Renamed" Width="200" Click="BtnFileRenamed_Click" Margin="5"/>
</StackPanel>
</Grid>
</Grid>
</Window>
![Window]()
Step 4. Implement CustomFileSystemWatcher like below
using Custom.Net8.FileSystemWatcher;
using System.IO;
using System.Text;
using System.Windows;
namespace WpfAppTester
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
CustomFileSystemWatcher FileSystemWatcher { get; set; }
public MainWindow()
{
InitializeComponent();
FileSystemWatcher = new CustomFileSystemWatcher()
{
// This field is required when the user requires notifications from the file system for any changes that occur.
EnableRaisingEvents = true,
// When the user wishes to monitor changes not only in the root folder but also in its subfolders.
// If this feature is disabled, changes that occur in the subfolders will not be monitored.
IncludeSubdirectories = true,
// Substitute it with the root directory path of your choice.
Path = @"C:\Users\sanjay\Desktop\FileGallary",
// This field must be enabled if the user intends to initiate and monitor changes in a file system.
FileWatcherStarted = true,
// The use of the combination of "FileFilter" and "ExtensionType" is solely intended for situations where the user explicitly wishes to inspect changes within a single file.
// FileFilter = "DemoFile",
// ExtensionType = ".txt",
// If the user wishes to exclusively search for files with any extension type.
// FileFilter = "*.txt",
// If the user wants to search for a file of any type with any extension.
FileFilter = "*.*",
};
FileSystemWatcher.FileCreated += FileSystemWatcher_FileCreated;
FileSystemWatcher.FileDeleted += FileSystemWatcher_FileDeleted;
FileSystemWatcher.FileModified += FileSystemWatcher_FileModified;
FileSystemWatcher.FileRenamed += FileSystemWatcher_FileRenamed;
}
private void FileSystemWatcher_FileRenamed(object? sender, Custom.Net8.FileSystemWatcher.Utilities.CustomRenamedEventArgs e)
{
MessageBox.Show("File Renamed");
}
private void FileSystemWatcher_FileModified(object? sender, Custom.Net8.FileSystemWatcher.Utilities.CustomFileSystemEventArgs e)
{
MessageBox.Show("File Modified");
}
private void FileSystemWatcher_FileDeleted(object? sender, Custom.Net8.FileSystemWatcher.Utilities.CustomFileSystemEventArgs e)
{
MessageBox.Show("File Deleted");
}
private void FileSystemWatcher_FileCreated(object? sender, Custom.Net8.FileSystemWatcher.Utilities.CustomFileSystemEventArgs e)
{
MessageBox.Show("File Created");
}
private void BtnFileCreated_Click(object sender, RoutedEventArgs e)
{
// Check if the file already exists
if (!File.Exists(System.IO.Path.Combine(@"C:\Users\sanjay\Desktop\FileGallary", "DemoFile.txt")))
{
// Create the file and write some content
using (FileStream fs = File.Create(System.IO.Path.Combine(@"C:\Users\sanjay\Desktop\FileGallary", "DemoFile.txt")))
{
// Write content to the file
string content = TxtBxDemo.Text;
byte[] bytes = Encoding.UTF8.GetBytes(content);
fs.Write(bytes, 0, bytes.Length);
}
}
else
{
MessageBox.Show("File already exists.");
}
}
private void BtnFileModified_Click(object sender, RoutedEventArgs e)
{
if (File.Exists(System.IO.Path.Combine(@"C:\Users\sanjay\Desktop\FileGallary", "DemoFile.txt")))
{
File.WriteAllText(System.IO.Path.Combine(@"C:\Users\sanjay\Desktop\FileGallary", "DemoFile.txt"), TxtBxDemo.Text);
}
else
{
MessageBox.Show("File does not exist.");
}
}
private void BtnFileDeleted_Click(object sender, RoutedEventArgs e)
{
File.Delete(System.IO.Path.Combine(@"C:\Users\sanjay\Desktop\FileGallary", "DemoFile.txt"));
}
private void BtnFileRenamed_Click(object sender, RoutedEventArgs e)
{
// Specify the current file path and the new file path
string currentFilePath = @"C:\Users\sanjay\Desktop\FileGallary\DemoFile.txt";
string newFilePath = @"C:\Users\sanjay\Desktop\FileGallary\Renamedfilename.txt";
try
{
// Create a FileInfo
System.IO.FileInfo fi = new System.IO.FileInfo(currentFilePath);
// Check if file is there
if (fi.Exists)
{
// Move file with a new name. Hence renamed.
fi.MoveTo(newFilePath);
Console.WriteLine("File Renamed.");
}
}
catch (Exception ex)
{
Console.WriteLine($"An error occurred: {ex.Message}");
}
}
}
}
Step 5. Result of some actions
The action has resulted in the creation of a file.
![File Created]()
The action has resulted in the modification of a file.
![Modifiaction]()
The action has resulted in the renaming of a file.
![Action]()
Notes. Implement additional logic as needed inside the event handlers of the CustomWatcher implementation.
Repository Path: https://github.com/OmatrixTech/WpfAppTester