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；
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(-, SeekOrigin.End);
const int seekPos = ;
int rl = ;
byte[] Info = new byte[seekPos];
rl = stream.Read(Info, , 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 = ;//循环的起始值
int currentIndex = ;//Info的当前索引值
//获取TAG标识(数组前3个)
for (i = currentIndex; i < currentIndex + ; 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[];//将歌名部分读到一个单独的数组中
int j = ;
for (i = currentIndex; i < currentIndex + ; 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 = ;
byte[] bytArtist = new byte[];//将歌手名部分读到一个单独的数组中
for (i = currentIndex; i < currentIndex + ; 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 = ;
byte[] bytAlbum = new byte[];//将唱片名部分读到一个单独的数组中
for (i = currentIndex; i < currentIndex + ; i++)
{
bytAlbum[j] = Info[i];
position++;
j++;
}
currentIndex = position;
mp3Info.Album = this.byteToString(bytAlbum);
//获取年 （数组93-96）
str = null;
j = ;
byte[] bytYear = new byte[];//将年部分读到一个单独的数组中
for (i = currentIndex; i < currentIndex + ; 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 = ;
byte[] bytComment = new byte[];//将注释部分读到一个单独的数组中
for (i = currentIndex; i < currentIndex + ; 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(, str.IndexOf('\0') >= ? str.IndexOf('\0') : str.Length);//去掉无用字符
return str;
}
}