shell32 获取文件（MP3）详细信息

public Mp3Info GetMP3Info(string songPath)
{

Mp3Info mp3info = new Mp3Info();

string file = songPath;
ShellClass sh = new ShellClass();
Folder dir = sh.NameSpace(Path.GetDirectoryName(file));
FolderItem item = dir.ParseName(Path.GetFileName(file));

//获取Tags
string tag = dir.GetDetailsOf(item,18);
mp3info.tag = tag.ToString();

//获取歌名
string songName = dir.GetDetailsOf(item,21);
mp3info.Title = songName.ToString();

//获取歌手
string artist = dir.GetDetailsOf(item,13);
mp3info.Artist = artist.ToString();

//获取歌曲路径
mp3info.songPath = songPath;

//获取歌曲时长
string songTime =  dir.GetDetailsOf(item, 27);
mp3info.songTime = songTime.Substring(3);

return mp3info;

//GetDetailsOf第二个参数实际意义如下：

//0   => Name
//1   => Size
//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
//14  => Album
//15  => Year
//16  => Genre
//17  => Conductors
//18  => Tags
//19  => Rating
//20  => Authors
//21  => Title
//22  => Subject
//23  => Categories
//24  => Comments
//25  => Copyright
//26  => #
//27  => Length
//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