using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Runtime.InteropServices;
using?System.Text;
using?System.Threading.Tasks;
using?System.Windows.Forms;

namespace?MechanicalPiano1._0
{
????public?partial?class?Form1?:?Form
????{
????????string?MusicPath?=?““;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}
????????#region//調用windows庫
????????[DllImport（“Kernel32.dll“）]
????????public?static?extern?bool?Beep（int?frequency?int?duration）;//蜂鳴器發聲
????????#endregion
????????private?void?Form1_Load（object?sender?EventArgs?e）
????????{

????????????string?path?=?System.Environment.CurrentDirectory;
????????????path?=?path.Substring（0?path.LastIndexOf（“\\“））;
????????????MusicPath?=?path?+?“\\music\\“;
????????????//MediaPlayer1.Ctlcontrols.stop（）;????????//停止
????????????//MediaPlayer1.Ctlcontrols.pause（）;???????//暫停
????????}


????????private?void?Form1_KeyDown（object?sender?KeyEventArgs?e）
????????{
????????????if?（e.KeyCode?==?Keys.Escape）//
????????????{
????????????????MediaPlayer27.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer27.URL?=?MusicPath?+?“27.mp3“;
????????????????MediaPlayer27.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F1）
????????????{
????????????????MediaPlayer28.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer28.URL?=?MusicPath?+?“28.mp3“;
????????????????MediaPlayer28.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F2）
????????????{
????????????????MediaPlayer30.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer30.URL?=?MusicPath?+?“30.mp3“;
????????????????MediaPlayer30.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F3）
????????????{
????????????????MediaPlayer32.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer32.URL?=?MusicPath?+?“32.mp3“;
????????????????MediaPlayer32.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F4）
????????????{
????????????????MediaPlayer33.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer33.URL?=?MusicPath?+?“33.mp3“;
????????????????MediaPlayer33.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F5）
????????????{
????????????????MediaPlayer35.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer35.URL?=?MusicPath?+?“35.mp3“;
????????????????MediaPlayer35.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F6）
????????????{
????????????????MediaPlayer37.Ctlcontrols.stop（）;????????//停止
????????????????MediaPlayer37.URL?=?MusicPath?+?“37.mp3“;
????????????????MediaPlayer37.Ctlcontrols.play（）;????????//播放
????????????}
????????????if?（e.KeyCode?==?Keys.F7）
????????????{
????????????????MediaPlayer39.Ctlcontrols.stop（）;????????//停止
????????????????Med

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件????????1023??2020-09-09?19:03??MechanicalPiano1.0\MechanicalPiano1.0.sln
?????文件???????43520??2020-09-14?23:27??MechanicalPiano1.0\MechanicalPiano1.0.v12.suo
?????目錄???????????0??2020-11-03?20:56??MechanicalPiano1.0\MechanicalPiano1.0\
?????文件?????????187??2020-09-09?19:03??MechanicalPiano1.0\MechanicalPiano1.0\App.config
?????目錄???????????0??2020-11-03?20:56??MechanicalPiano1.0\MechanicalPiano1.0\bin\
?????目錄???????????0??2020-11-03?20:56??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\
?????文件???????53760??2020-09-09?21:45??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\AxInterop.WMPLib.dll
?????文件??????330752??2020-09-09?21:44??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\Interop.WMPLib.dll
?????文件???????94208??2020-09-12?00:32??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.exe
?????文件?????????187??2020-09-09?19:03??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.exe.config
?????文件???????46592??2020-09-12?00:32??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.pdb
?????文件???????24224??2020-09-14?23:19??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.vshost.exe
?????文件?????????187??2020-09-09?19:03??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.vshost.exe.config
?????文件?????????490??2019-03-19?12:47??MechanicalPiano1.0\MechanicalPiano1.0\bin\Debug\MechanicalPiano1.0.vshost.exe.manifest
?????目錄???????????0??2020-11-03?20:56??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\
?????文件???????69509??2011-05-29?13:48??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\01.mp3
?????文件???????63947??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\02.mp3
?????文件???????70635??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\03.mp3
?????文件???????31346??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\04.mp3
?????文件???????31346??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\05.mp3
?????文件???????32600??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\06.mp3
?????文件???????30511??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\07.mp3
?????文件???????31764??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\08.mp3
?????文件???????29257??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\09.mp3
?????文件???????29675??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\10.mp3
?????文件???????30093??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\11.mp3
?????文件???????30093??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\12.mp3
?????文件???????30929??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\13.mp3
?????文件???????30511??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\14.mp3
?????文件???????28839??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\15.mp3
?????文件???????30093??2011-05-29?13:46??MechanicalPiano1.0\MechanicalPiano1.0\bin\music\16.mp3
............此處省略102個文件信息