String path = @"X:\xxx\xxx";//第一种方法var files = Directory.GetFiles(path, "*.txt"); foreach (var file in files) Console.WriteLine(file);//第二种方法DirectoryInfo folder = new DirectoryInfo(path); foreach (FileInfo file in folder.GetFiles("*.txt")){ Console.WriteLine(file.FullName);}来源：http://www.cnblogs.com/technology/archive/2011/07/12/2104786.html