C# 获取 mp3文件信息【包括：文件大小、歌曲长度、歌手、专辑】

C# 获取 mp3文件信息【包括：文件大小、歌曲长度、歌手、专辑】

第一种方式：[代码已验证]

// http://bbs.csdn.net/topics/390392612

  string file = @"E:\滴答.mp3";

            ShellClass sh = new ShellClass();

            Folder dir = sh.NameSpace(Path.GetDirectoryName(file));

            FolderItem item = dir.ParseName(Path.GetFileName(file));

            string str = dir.GetDetailsOf(item, 27) ; // 获取歌曲时长。

            MessageBox.Show(str);

// 如果执行过程中，出现是错误提示，通过Shell32 的 Embed Interop Types 属性设置为 False 即可；

//如果是1.0版本会报错请下载1.2版本 下载地址

https://download.csdn.net/download/u013087481/10952812

调用结果，在Win2003,2008,xp上应使用dir.GetDetailsOf(item, 21) ，而在Vista,win7、win8,win10等系统应使用folder.GetDetailsOf(folderItem, 27) ，主要是因为不同系统下文件属性索引顺序不同造成。只要右键单击文件属性，能看到的媒体属性都能取到，可以换不同的索引值来取。如下所示，取出的时间长度是 00:03:52，目标完成。

shell 获取 文件详细信息

首先引用COM组件

Microsoft Shell Controls And Automation

这里需要注意

DLL的属性Embed Interop Type 设为False

否则会引起互操作类型异常

代码如下

ShellClass sh = new ShellClass();

Folder dir = sh.NameSpace(Path.GetDirectoryName(sFile));

FolderItem item = dir.ParseName(Path.GetFileName(sFile));

string det = dir.GetDetailsOf(item, iCol);

iCol 对应文件详细属性汇总

ID  => DETAIL-NAME

0   => Name

1   => Size     // MP3 文件大小

2   => Type

3   => Date modified

4   => Date created

5   => Date accessed

6   => Attributes

7   => Offline status

8   => Offline availability

9   => Perceived type

10  => Owner

11  => Kinds

12  => Date taken

13  => Artists   // MP3 歌手

14  => Album     // MP3 专辑

15  => Year

16  => Genre

17  => Conductors

18  => Tags

19  => Rating

20  => Authors

21  => Title     // MP3 歌曲名

22  => Subject

23  => Categories

24  => Comments

25  => Copyright

26  => #

27  => Length    // MP3 时长

28  => Bit rate

29  => Protected

30  => Camera model

31  => Dimensions

32  => Camera maker

33  => Company

34  => File description

35  => Program name

36  => Duration

37  => Is online

38  => Is recurring

39  => Location

40  => Optional attendee addresses

41  => Optional attendees

42  => Organizer address

43  => Organizer name

44  => Reminder time

45  => Required attendee addresses

46  => Required attendees

47  => Resources

48  => Free/busy status

49  => Total size

50  => Account name

51  => Computer

52  => Anniversary

53  => Assistant's name

54  => Assistant's phone

55  => Birthday

56  => Business address

57  => Business city

58  => Business country/region

59  => Business P.O. box

60  => Business postal code

61  => Business state or province

62  => Business street

63  => Business fax

64  => Business home page

65  => Business phone

66  => Callback number

67  => Car phone

68  => Children

69  => Company main phone

70  => Department

71  => E-mail Address

72  => E-mail2

73  => E-mail3

74  => E-mail list

75  => E-mail display name

76  => File as

77  => First name

78  => Full name

79  => Gender

80  => Given name

81  => Hobbies

82  => Home address

83  => Home city

84  => Home country/region

85  => Home P.O. box

86  => Home postal code

　　

//第二种方式： 读取文件结构获取 MP3文件信息 [代码未验证]

 public struct Mp3Info
    {
        public string identify;//TAG，三个字节
        public string Title;//歌曲名,30个字节
        public string Artist;//歌手名,30个字节
        public string Album;//所属唱片,30个字节
        public string Year;//年,4个字符
        public string Comment;//注释,28个字节
        public char reserved1;//保留位，一个字节
        public char reserved2;//保留位，一个字节
        public char reserved3;//保留位，一个字节
    }
    /// <summary>
    /// mp3类
    /// </summary>
    public class clsMP3
    {
        public void fLogSave(Page _sender, Hashtable _htUser)
        {

        }
        //所以，我们只要把MP3文件的最后128个字节分段读出来并保存到该结构里就可以了。函数定义如下：
        private byte[] getLast128(string FileName)
        {
            FileStream fs = new FileStream(FileName, FileMode.Open, FileAccess.Read);
            Stream stream = fs;
            stream.Seek(-128, SeekOrigin.End);
            const int seekPos = 128;
            int rl = 0;
            byte[] Info = new byte[seekPos];
            rl = stream.Read(Info, 0, seekPos);
            fs.Close();
            stream.Close();
            return Info;
        }
        //再对上面返回的字节数组分段取出，并保存到Mp3Info结构中返回:
        private Mp3Info getMp3Info(byte[] Info)
        {
            Mp3Info mp3Info = new Mp3Info();
            string str = null;
            int i;
            int position = 0;//循环的起始值
            int currentIndex = 0;//Info的当前索引值
            //获取TAG标识(数组前3个)
            for (i = currentIndex; i < currentIndex + 3; i++)
            {
                str = str + (char)Info[i];
                position++;
            }
            currentIndex = position;
            mp3Info.identify = str;
           //获取歌名（数组3-32）
            str = null;
            byte[] bytTitle = new byte[30];//将歌名部分读到一个单独的数组中
            int j = 0;
            for (i = currentIndex; i < currentIndex + 30; i++)
            {
                bytTitle[j] = Info[i];
                position++;
                j++;
            }
            currentIndex = position;
            mp3Info.Title = this.byteToString(bytTitle);
           //获取歌手名（数组33-62）
            str = null;
            j = 0;
            byte[] bytArtist = new byte[30];//将歌手名部分读到一个单独的数组中
            for (i = currentIndex; i < currentIndex + 30; i++)
            {
                bytArtist[j] = Info[i];
                position++;
                j++;
            }
            currentIndex = position;
            mp3Info.Artist = this.byteToString(bytArtist);
            //获取唱片名（数组63-92）
            str = null;
            j = 0;
            byte[] bytAlbum = new byte[30];//将唱片名部分读到一个单独的数组中
            for (i = currentIndex; i < currentIndex + 30; i++)
            {
                bytAlbum[j] = Info[i];
                position++;
                j++;
            }
            currentIndex = position;
            mp3Info.Album = this.byteToString(bytAlbum);
            //获取年 （数组93-96）
            str = null;
            j = 0;
            byte[] bytYear = new byte[4];//将年部分读到一个单独的数组中
            for (i = currentIndex; i < currentIndex + 4; i++)
            {
                bytYear[j] = Info[i];
                position++;
                j++;
            }
            currentIndex = position;
            mp3Info.Year = this.byteToString(bytYear);
            //获取注释（数组97-124）
            str = null;
            j = 0;
            byte[] bytComment = new byte[28];//将注释部分读到一个单独的数组中
            for (i = currentIndex; i < currentIndex + 25; i++)
            {
                bytComment[j] = Info[i];
                position++;
                j++;
            }
            currentIndex = position;
            mp3Info.Comment = this.byteToString(bytComment);
            //以下获取保留位（数组125-127）
            mp3Info.reserved1 = (char)Info[++position];
            mp3Info.reserved2 = (char)Info[++position];
            mp3Info.reserved3 = (char)Info[++position];
            return mp3Info;
        }
        //上面程序用到下面的方法：
        ///   <summary>
        ///   将字节数组转换成字符串
        ///   </summary>
        ///   <param   name   =   "b">字节数组</param>
        ///   <returns>返回转换后的字符串</returns>
        private string byteToString(byte[] b)
        {
            Encoding enc = Encoding.GetEncoding("GB2312");
            string str = enc.GetString(b);
            str = str.Substring(0, str.IndexOf('\0') >= 0 ? str.IndexOf('\0') : str.Length);//去掉无用字符
            return str;
        }
    }