string[] fileNames = Directory.GetFiles(@"D:\demo");  //获取整个demo的文件不包含文件夹

DirectoryInfo dirInfo = new DirectoryInfo(@"D:\demo");  

FileInfo[] fils = dirInfo.GetFiles();          //获取整个demo的 文件 不包含文件夹

DirectoryInfo[] directorys = dirInfo.GetDirectories();  //获取整个demo的文件夹

DirectoryInfo ParentInfo = dirInfo.Parent; //获取当前demo的上级

string[] fileNames = Directory.GetFiles(@"D:\demo");  //获取整个demo的文件不包含文件夹
DirectoryInfo dirInfo = new DirectoryInfo(@"D:\demo");  
FileInfo[] fils = dirInfo.GetFiles();  //获取整个demo的文件不包含文件夹
DirectoryInfo ParentInfo = dirInfo.Parent; //获取当前demo的上级