How to determine if a file copy is complete

Question

How can I determine if a file copy has been completed? Upon receiving an FTP'd file I need to process the file. I'm using the FileSystemWatcher to monitor for the file. I get the create and several change events however even on the final change event the file isn't always released yet.

Mike · Answer

I was able to do it using the FileSystemWatcher hopefully this will help someone else. FileSystemWatcher monitor = new FileSystemWatcher(c:\test); private void button1_Click( object sender System.EventArgs e) { monitor.IncludeSubdirectories = false ; monitor.NotifyFilter = (NotifyFilters.FileName | NotifyFilters.LastAccess); monitor.Created += new FileSystemEventHandler(FileCreateHandler); monitor.Changed += new FileSystemEventHandler(FileChangeHandler); monitor.EnableRaisingEvents = true ; } private void FileChangeHandler(Object obj  System.IO.FileSystemEventArgs fsea) { try { FileInfo fi = new FileInfo(fsea.FullPath); File.Copy(fsea.FullPathc:\test2\ + fsea.Name true ); textBox1.Text += The file has been moved. + Environment.NewLine; fi.Delete(); textBox1.Text += The file has been deleted. + Environment.NewLine; } catch (System.IO.IOException e) { textBox1.Text += e.Message; } catch (Exception e) { textBox1.Text += e.Message; } } private void FileCreateHandler(Object obj  System.IO.FileSystemEventArgs fsea) { FileInfo fi = new FileInfo(fsea.FullPath); textBox1.Text = fsea.Name +  created. + Environment.NewLine; }