using?System;
using?System.Collections.Generic;
using?System.IO;
using?System.Linq;
using?System.Text;
using?System.Threading.Tasks;
using?System.Text;

namespace?Kgtemp_Converter
{

????public?class?ID3Info
????{
????????public?string?title?{?get;?set;?}
????????public?string?Artist?{?get;?set;?}
????????public?string?Album?{?get;?set;?}
????????public?string?Year?{?get;?set;?}
????????public?string?Comment?{?get;?set;?}
????}

????public?class?ID3Helper

????{
????????#region?MP3信息結構
????????///?

????????///?MP3信息結構
????????///?

????????public?struct?Mp3Info
????????{
????????????public?string?identify;?//TAG，三個字節
????????????public?string?title;?//歌曲名30個字節
????????????public?string?Artist;?//歌手名30個字節
????????????public?string?Album;?//所屬唱片30個字節
????????????public?string?Year;?//年4個字符
????????????public?string?Comment;?//注釋28個字節
????????????public?char?reserved1;?//保留位，一個字節
????????????public?char?reserved2;?//保留位，一個字節
????????????public?char?reserved3;?//保留位，一個字節
????????}
????????#endregion

????????public?static?Encoding?DetectEncoding（byte?encoding?=?0x00）
????????{
????????????Encoding?tagEncoding?=?null;
????????????//?Checks?to?see?what?encoding?type?it?is.
????????????switch?（encoding）
????????????{
????????????????case?0x00:?tagEncoding?=?Encoding.GetEncoding（“ISO-8859-1“）;?break;
????????????????case?0x01:?tagEncoding?=?Encoding.GetEncoding（“UTF-16“）;?break;
????????????????case?0x02:?tagEncoding?=?Encoding.GetEncoding（“UTF-16BE“）;?break;
????????????????case?0x03:?tagEncoding?=?Encoding.UTF8;?break;
????????????????default:?throw?new?Exception（“Invalid?encoding?type?of?ID3v2.“）;
????????????}
????????????return?tagEncoding;
????????}

????????public?static?Mp3Info?GetMp3Info（string?FileName）
????????{
????????????//打開文件
????????????FileStream?fs?=?new?FileStream（FileName?FileMode.Open?FileAccess.Read）;

????????????Encoding?FileEncoding?=?Encoding.GetEncoding（“GBK“）;
????????????//獲取MP3文件最后128個字節ID3信息保存于此如果獲取失敗則返回null
????????????const?int?seekPos?=?128;
????????????fs.Seek（-seekPos?SeekOrigin.End）;?//從文件尾部開始往回seek到128字節處
????????????int?rl?=?0;
????????????byte[]?Last128?=?new?byte[seekPos];
????????????rl?=?fs.Read（Last128?0?seekPos）;?//將最后的128個字節讀出來放入byte[]中
????????????fs.Seek（0?SeekOrigin.Begin）;??//恢復Seek位置
????????????//關閉文件
????????????fs.Close（）;

????????????//將mp3最后的128個字節格式化為Mp3Info
????????????Mp3Info?myMp3Info?=?FormatMp3Info（Last128?FileEncoding）;
????????????//返回
????????????return?myMp3Info;
????????}

????????#region?將mp3最后的128個字節格式化為Mp3Info

????????///?

????????///?將mp3最后的128個字節格式化為Mp3Info
????????///?

????????///?從MP3文件中截取的二進制信息
????????///?返回一個Mp3Info結構
????????private?static?Mp3Info?FormatMp3Info（byte[]?Info?System.Text.Encoding?Encoding）
????????{
????????????Mp3Info?myMp3Info?=?new?Mp3Info（）;
????????????string?str?=?null;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????28160??2018-10-14?14:10??Kgtemp_Convert_Mp3\bin\Debug\Kgtemp_Convert_Mp3.exe

?????文件??????38400??2018-10-14?14:10??Kgtemp_Convert_Mp3\bin\Debug\Kgtemp_Convert_Mp3.pdb

?????文件??????11600??2018-10-14?14:10??Kgtemp_Convert_Mp3\bin\Debug\Kgtemp_Convert_Mp3.vshost.exe

?????文件???????6913??2018-04-15?18:56??Kgtemp_Convert_Mp3\ID3Helper.cs

?????文件??????14162??2018-10-14?14:10??Kgtemp_Convert_Mp3\Kgtemp_Converter.cs

?????文件??????13613??2018-10-14?14:08??Kgtemp_Convert_Mp3\Kgtemp_Converter.Designer.cs

?????文件??????13957??2018-10-14?14:08??Kgtemp_Convert_Mp3\Kgtemp_Converter.resx

?????文件???????3790??2018-04-15?18:57??Kgtemp_Convert_Mp3\Kgtemp_Convert_Mp3.csproj

?????文件???????5420??2018-04-15?18:48??Kgtemp_Convert_Mp3\obj\x86\Debug\DesignTimeResolveAssemblyReferences.cache

?????文件???????6395??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\DesignTimeResolveAssemblyReferencesInput.cache

?????文件???????1571??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.csproj.FileListAbsolute.txt

?????文件????????986??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.csproj.GenerateResource.Cache

?????文件??????28160??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.exe

?????文件???????5788??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.Kgtemp_Converter.resources

?????文件??????38400??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.pdb

?????文件????????180??2018-04-20?00:40??Kgtemp_Convert_Mp3\obj\x86\Debug\Kgtemp_Convert_Mp3.Properties.Resources.resources

?????文件???????5420??2018-04-19?19:53??Kgtemp_Convert_Mp3\obj\x86\Release\DesignTimeResolveAssemblyReferences.cache

?????文件???????6399??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\DesignTimeResolveAssemblyReferencesInput.cache

?????文件???????1599??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.csproj.FileListAbsolute.txt

?????文件????????986??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.csproj.GenerateResource.Cache

?????文件??????27136??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.exe

?????文件???????5788??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.Kgtemp_Converter.resources

?????文件??????36352??2018-10-14?14:10??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.pdb

?????文件????????180??2018-04-20?00:40??Kgtemp_Convert_Mp3\obj\x86\Release\Kgtemp_Convert_Mp3.Properties.Resources.resources

?????文件????????510??2018-04-15?13:56??Kgtemp_Convert_Mp3\Program.cs

?????文件???????1368??2018-04-15?13:34??Kgtemp_Convert_Mp3\Properties\AssemblyInfo.cs

?????文件???????2884??2018-04-15?13:34??Kgtemp_Convert_Mp3\Properties\Resources.Designer.cs

?????文件???????5612??2018-04-15?13:34??Kgtemp_Convert_Mp3\Properties\Resources.resx

?????文件???????1101??2018-04-15?13:34??Kgtemp_Convert_Mp3\Properties\Settings.Designer.cs

?????文件????????249??2018-04-15?13:34??Kgtemp_Convert_Mp3\Properties\Settings.settings

............此處省略16個文件信息