How to show the xml file data in GridView?

Write following code like below after  adding new global.asax file to project 



protected void Application_Start(Object sender, EventArgs e)
		{
                               
			FileSystemWatcher watcher = new FileSystemWatcher();
			watcher.Path = Server.MapPath(".") + @"\FTP";
			watcher.NotifyFilter = NotifyFilters.CreationTime;
			watcher.Filter = "YourFile.txt";
			watcher.Changed += new FileSystemEventHandler(OnChanged);
			watcher.EnableRaisingEvents = true;

		}

		private void OnChanged(object source, FileSystemEventArgs e)
		{
                   //Do whatever you want!
                   // Yuo Can Call your custome method that refresh data in Page 
		}