使用FileSystemWatcher监视文件变化
2007-04-01 20:44
579 查看
public class Watcher
{
public static void Main()
{
Run();
}
[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public static void Run()
{
string[] args = System.Environment.GetCommandLineArgs();
// If a directory is not specified, exit program.
if(args.Length != 2)
{
// Display the proper way to call the program.
Console.WriteLine("Usage: Watcher.exe (directory)");
return;
}
// Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = args[1];
/**//* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = "*.txt";
// Add event handlers.
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnRenamed);
// Begin watching.
watcher.EnableRaisingEvents = true;
// Wait for the user to quit the program.
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read()!='q');
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
}
private static void OnRenamed(object source, RenamedEventArgs e)
{
// Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
}
}
需要注意的两点:
1. 必须设置watcher.EnableRaisingEvents为true才可以开始监视
2. 使用watcher.WaitForChanged(WatcherChangeTypes.Changed,1000)方法时必须指定第二个参数timeout,如果不指定,则程序会一直在等待。
{
public static void Main()
{
Run();
}
[PermissionSet(SecurityAction.Demand, Name="FullTrust")]
public static void Run()
{
string[] args = System.Environment.GetCommandLineArgs();
// If a directory is not specified, exit program.
if(args.Length != 2)
{
// Display the proper way to call the program.
Console.WriteLine("Usage: Watcher.exe (directory)");
return;
}
// Create a new FileSystemWatcher and set its properties.
FileSystemWatcher watcher = new FileSystemWatcher();
watcher.Path = args[1];
/**//* Watch for changes in LastAccess and LastWrite times, and
the renaming of files or directories. */
watcher.NotifyFilter = NotifyFilters.LastAccess | NotifyFilters.LastWrite
| NotifyFilters.FileName | NotifyFilters.DirectoryName;
// Only watch text files.
watcher.Filter = "*.txt";
// Add event handlers.
watcher.Changed += new FileSystemEventHandler(OnChanged);
watcher.Created += new FileSystemEventHandler(OnChanged);
watcher.Deleted += new FileSystemEventHandler(OnChanged);
watcher.Renamed += new RenamedEventHandler(OnRenamed);
// Begin watching.
watcher.EnableRaisingEvents = true;
// Wait for the user to quit the program.
Console.WriteLine("Press \'q\' to quit the sample.");
while(Console.Read()!='q');
}
// Define the event handlers.
private static void OnChanged(object source, FileSystemEventArgs e)
{
// Specify what is done when a file is changed, created, or deleted.
Console.WriteLine("File: " + e.FullPath + " " + e.ChangeType);
}
private static void OnRenamed(object source, RenamedEventArgs e)
{
// Specify what is done when a file is renamed.
Console.WriteLine("File: {0} renamed to {1}", e.OldFullPath, e.FullPath);
}
}
需要注意的两点:
1. 必须设置watcher.EnableRaisingEvents为true才可以开始监视
2. 使用watcher.WaitForChanged(WatcherChangeTypes.Changed,1000)方法时必须指定第二个参数timeout,如果不指定,则程序会一直在等待。
相关文章推荐
- 使用FileSystemWatcher监视文件变化
- 使用FileSystemWatcher监控文件变化
- c#的FileSystemWatcher对象监视文件的变化的事件,无休止的触发事件的解决办法
- 用FileSystemWatcher监视文件变化
- 用QFileSystemWatcher来监视文件和目录的改变(内部还是使用了timer)
- powershell FileSystemWatcher监控文件变化
- 使用文件监控对象FileSystemWatcher实现数据同步
- C#使用FileSystemWatcher控件实现的文件监控功能示例
- 使用FileSystemWatcher监测大文件时,如何判断文件已经创建完成?
- 使用文件监控对象FileSystemWatcher实现数据同步
- 使用.NET FileSystemWatcher对象监控磁盘文件目录的改变
- C#使用文件监控对象FileSystemWatcher 实现数据同步
- c#使用filesystemwatcher监视文件系统的变化
- System.IO.FileSystemWatcher 监视目录文件的状态
- 使用FileSystemWatcher捕获系统文件状态
- C# 使用FileSystemWatcher来监视文件系统的变化
- 文件监视器( FileSystemWatcher) 类的使用
- c#实现数据同步的方法(使用文件监控对象filesystemwatcher)
- 使用.NET FileSystemWatcher对象监控磁盘文件目录的改变
- 使用FileSystemWatcher监控文件夹及文件