【.Net 学习系列】-- FileSystemWatcher 监控文件夹新生成文件，并在确认文件没有被其他程序占用后将其移动到指定文件夹

监控文件夹测试程序：

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;

 namespace FileSystemWatcherTest
 {
     class Program
     {
         static void Main(string[] args)
         {
             FileSystemWatcher watcher = new FileSystemWatcher("C:\\FileSystemWatcher", "*.txt");
             watcher.NotifyFilter = NotifyFilters.FileName;
             watcher.Created += new FileSystemEventHandler(FileCreated);
             watcher.EnableRaisingEvents = true;

             Console.ReadLine();
         }

         private static void FileCreated(object sender, FileSystemEventArgs e)
         {
             if (!File.Exists(e.FullPath))
             {
                 return;
             }
             Console.WriteLine("Created: {0: HH:mm:ss}", DateTime.Now);

             while (!IsFileReady(e.FullPath))
             {
                 Console.WriteLine("Used: {0: HH:mm:ss}", DateTime.Now);
             }
             //在这里进行文件处理。。。
             Console.WriteLine("Ready: {0: HH:mm:ss}", DateTime.Now);

             Thread.Sleep( * );
             FileInfo fs = new FileInfo(e.FullPath);

             var moveToPath = @"\\testServer\Shares\" + fs.Name;
             fs.MoveTo(moveToPath);

             if (!File.Exists(moveToPath))
             {
                 Console.WriteLine("Move Faild: {0: HH:mm:ss}", DateTime.Now);
             }
             Console.WriteLine("Move Success: {0: HH:mm:ss}", DateTime.Now);
         }

         static bool IsFileReady(string filename)
         {
             FileInfo fi = new FileInfo(filename);
             FileStream fs = null;
             try
             {
                 fs = fi.Open(FileMode.Open, FileAccess.ReadWrite,FileShare.None);
                 return true;
             }

             catch (IOException)
             {
                 return false;
             }

             finally
             {
                 if (fs != null)
                     fs.Close();
             }
         }
     }
 }

文件生成测试程序：

 using System;
 using System.Collections.Generic;
 using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading;
 using System.Threading.Tasks;

 namespace GenerateFileTest
 {
     class Program
     {
         static void Main(string[] args)
         {
             FileStream fs = new FileStream("C:\\FileSystemWatcher\\Test.txt", FileMode.Create);
             StreamWriter sw = new StreamWriter(fs);

             var currDateTime = DateTime.Now;
             var maxDateTime = currDateTime.AddSeconds();

             Console.WriteLine("Log begin: {0}", DateTime.Now.ToString("HH:mm:ss"));
             while (currDateTime < maxDateTime)
             {
                 sw.WriteLine(DateTime.Now.ToString());
                 currDateTime = DateTime.Now;
             }

             //清空缓冲区
             sw.Flush();
             //关闭流
             sw.Close();
             fs.Close();

             Console.WriteLine("Log end: {0}", DateTime.Now.ToString("HH:mm:ss"));
             Console.ReadLine();
         }
     }
 }

运行结果：