查询某文件夹下的所有文件

　　　　var Path = @"F:\教程\ASP\第12季asp.net高级\";//文件夹路径

　　　　DirectoryInfo dir = new DirectoryInfo(Path);
            if (dir.Exists)
            {
                FileInfo[] fiList = dir.GetFiles();
                foreach (var item in fiList)
                {
                    var FilePath = item.FullName; //路径加文件名加后缀
                    //var FileName = item.Name;     //文件名加后缀
                    string s2 = FilePath.Substring(0, 24) + FilePath.Substring(46);
                    MessageBox.Show(s2);
                    //File.Move(FilePath,s2); //更改名称
                }
             }