C#文件系统复习

1、获取驱动器名称

using System;

namespace TestFile
{
    class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine();
            String[] drives = Environment.GetLogicalDrives();

            foreach(string drive in drives)
            {
                Console.WriteLine(drive);
            }
            Console.WriteLine("GetLogicalDrives: {0}", String.Join(", ", drives));

            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }
}

 

2、System.IO.DriverInfo相关属性

using System;

namespace TestFile
{
    class Program
    {
        public static void Main(string[] args)
        {
            Console.WriteLine();
            //获取驱动器名称
            String[] drives = Environment.GetLogicalDrives();
            
            //遍历驱动器名称
            foreach(string dr in drives)
            {
                //获取驱动器相关信息
                System.IO.DriveInfo driver = new System.IO.DriveInfo(dr);
                
                Console.WriteLine("驱动器可用空间: "+driver.AvailableFreeSpace);
                //NTFS or FAT
                Console.WriteLine("驱动器格式化类型: "+driver.DriveFormat);
                //CDRom、Fixed、Unknown、Network、NoRootDirectory、Ram、Removable 或 Unknown
                Console.WriteLine("驱动器类型: "+driver.DriveType);
                //如果驱动器已准备好，则为 true；如果驱动器未准备好，则为 false。
                Console.WriteLine("驱动器是否准备好: "+driver.IsReady);
                Console.WriteLine("驱动器名称: "+driver.Name);
                Console.WriteLine("驱动器根目录: "+driver.RootDirectory);
                Console.WriteLine("========================================================");
            }
            Console.Write("Press any key to continue . . . ");
            Console.ReadKey(true);
        }
    }
}

3、递归遍历指定文件夹中的目录

using System;
using System.IO;
namespace DirectoryTest
{
    public class RecursiveFileSearch
    {
        static System.Collections.Specialized.StringCollection log = new System.Collections.Specialized.StringCollection();

        static void Main()
        {

            DirectoryInfo rootDir = new DirectoryInfo("C:\\Oracle\\ora90");
            WalkDirectoryTree(rootDir);
            Console.WriteLine("Files with restricted access:");
            foreach (string s in log)
            {
                Console.WriteLine(s);
            }
            Console.WriteLine("Press any key");
            Console.ReadKey();
        }

        /// <summary>
        /// 循环遍历指定目录
        /// </summary>
        /// <param name="root"></param>
        static void WalkDirectoryTree(System.IO.DirectoryInfo root)
        {
            System.IO.FileInfo[] files = null;
            System.IO.DirectoryInfo[] subDirs = null;

            //1、获取root下的所有文件（包括文件夹）
            try
            {
                files = root.GetFiles("*.*");
            }
            //2、权限不够引发异常
            catch (UnauthorizedAccessException e)
            {
                //提权或记录日志
                log.Add(e.Message);
            }

            catch (System.IO.DirectoryNotFoundException e)
            {
                Console.WriteLine(e.Message);
            }

            if (files != null)
            {
                foreach (System.IO.FileInfo fi in files)
                {
                    Console.WriteLine(fi.FullName);
                }

                // 获取所有子目录
                subDirs = root.GetDirectories();

                foreach (System.IO.DirectoryInfo dirInfo in subDirs)
                {
                    // 递归调用
                    WalkDirectoryTree(dirInfo);
                }
            }
        }
    }
}