<span   style="max-width:90%">//</span><span style="color: #008000;">連接字符串</span>
       <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">string</span> str = <span style="color: #800000;">"</span><span style="color: #800000;">Data Source=HYJ-PC;Initial Catalog=MyKTV;User ID=sa;pwd=123</span><span style="color: #800000;">"</span>;

 <span style="color: #008000;">//</span><span style="color: #008000;">保存歌曲的目錄</span>
       <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">string</span> songURL = <span style="color: #800000;">""</span><span style="color: #000000;">;
       </span><span style="color: #008000;">//</span><span style="color: #008000;">保存歌手圖片的目錄</span>
 <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">string</span> singer_photoURL = <span style="color: #800000;">""</span><span style="color: #000000;">;
FrmByValue類（窗體對(duì)象之間的傳值）
  </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> frmsonglist frmsl;

       </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> FrmMain frM;

       </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> SelectedSong ss;

 <span style="color: #008000;">//</span><span style="color: #008000;">定義一個(gè)枚舉:歌曲播放狀態(tài)</span>
   <span style="color: #0000ff;">public</span>  <span style="color: #0000ff;">enum</span><span style="color: #000000;"> SongPlayState
    {
        unplayed, played, newplayed, cut

    }
  </span><span style="color: #0000ff;">public</span>  <span style="color: #0000ff;">class</span><span style="color: #000000;"> Song
  {

      </span><span style="color: #0000ff;">public</span>  <span style="color: #0000ff;">string</span><span style="color: #000000;"> SongName
      {
          </span><span style="color: #0000ff;">get</span> { <span style="color: #0000ff;">return</span><span style="color: #000000;"> songName; }
          </span><span style="color: #0000ff;">set</span> { songName =<span style="color: #000000;"> value; }
      }
      </span><span style="color: #0000ff;">public</span> <span style="color: #0000ff;">string</span><span style="color: #000000;"> SongURL
      {
          </span><span style="color: #0000ff;">get</span> { <span style="color: #0000ff;">return</span><span style="color: #000000;"> songURL; }
          </span><span style="color: #0000ff;">set</span> { songURL =<span style="color: #000000;"> value; }
      }

      </span><span style="color: #0000ff;">internal</span><span style="color: #000000;"> SongPlayState Playseat
      {
          </span><span style="color: #0000ff;">get</span> { <span style="color: #0000ff;">return</span><span style="color: #000000;"> playseat; }
          </span><span style="color: #0000ff;">set</span> { playseat =<span style="color: #000000;"> value; }
      }

      </span><span style="color: #0000ff;">PRivate</span> <span style="color: #0000ff;">string</span> songName;<span style="color: #008000;">//</span><span style="color: #008000;">歌曲名稱字段</span>
      <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">string</span> songURL;<span style="color: #008000;">//</span><span style="color: #008000;">歌曲存放路徑字段
      </span><span style="color: #008000;">//</span><span style="color: #008000;">讓歌曲的播放狀態(tài)默認(rèn)為未播放;</span>
      <span style="color: #0000ff;">private</span> SongPlayState playseat =<span style="color: #000000;"> SongPlayState.unplayed;

      </span><span style="color: #008000;">//</span><span style="color: #008000;">把歌曲狀態(tài)改為已播放</span>
      <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> SetSongPlayed()
      {
          </span><span style="color: #0000ff;">this</span>.playseat =<span style="color: #000000;"> SongPlayState.played;
      }
      </span><span style="color: #008000;">//</span><span style="color: #008000;">把歌曲狀態(tài)改為重唱</span>
      <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> SetnewSong()
      {
          </span><span style="color: #0000ff;">this</span>.playseat =<span style="color: #000000;"> SongPlayState.newplayed;
      }
      </span><span style="color: #008000;">//</span><span style="color: #008000;">把歌曲狀態(tài)改為一切歌</span>
      <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> Setcut()
      {
          </span><span style="color: #0000ff;">this</span>.playseat =<span style="color: #000000;"> SongPlayState.cut;
      }</span>

<span style="color: #0000ff;">public</span> <span style="color: #0000ff;">class</span><span style="color: #000000;"> PlayList
    {
       </span><span style="color: #008000;">//</span><span style="color: #008000;">定義一個(gè)數(shù)組,默認(rèn)可以儲(chǔ)存50首歌</span>
       <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> Song[] songList=<span style="color: #0000ff;">new</span> Song[<span style="color: #800080;">50</span>];<span style="color: #008000;">//</span><span style="color: #008000;">歌曲播放列表數(shù)組</span>
       <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">int</span> songIndex;<span style="color: #008000;">//</span><span style="color: #008000;">當(dāng)前播放的歌曲在數(shù)組的索引</span>



       <span style="color: #0000ff;">#region</span> 添加播放歌曲
       <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">bool</span><span style="color: #000000;"> AddSong(Song song)
       {
           </span><span style="color: #0000ff;">bool</span> happy = <span style="color: #0000ff;">false</span><span style="color: #000000;">;
           </span><span style="color: #0000ff;">for</span> (<span style="color: #0000ff;">int</span> i = <span style="color: #800080;">0</span>; i < songList.Length; i++<span style="color: #000000;">)
           {
               </span><span style="color: #0000ff;">if</span> (songList[i] == <span style="color: #0000ff;">null</span><span style="color: #000000;">)
               {
                   songList[i] </span>=<span style="color: #000000;"> song;

                   happy </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
                   </span><span style="color: #0000ff;">break</span><span style="color: #000000;">;
               }
           }
           </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> happy;

       } 
       </span><span style="color: #0000ff;">#endregion</span>
    
       <span style="color: #0000ff;">#region</span> 當(dāng)前播放的歌曲名稱
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">string</span><span style="color: #000000;"> PlayingSongName()
        { 
            </span><span style="color: #0000ff;">string</span> songName = <span style="color: #800000;">""</span>; <span style="color: #008000;">//</span><span style="color: #008000;"> 歌曲名稱</span>
             <span style="color: #0000ff;">if</span>(songList.Length><span style="color: #000000;">songIndex)
             {
                 </span><span style="color: #0000ff;">if</span> (songList[songIndex] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
                 {
                     songName </span>=<span style="color: #000000;"> songList[songIndex].SongName;
                 }
             }
           

            </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> songName;
        } 
       </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #0000ff;">#region</span> 獲取當(dāng)前播放的歌曲
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span><span style="color: #000000;"> Song GetPlayingSong()
         {
             </span><span style="color: #0000ff;">if</span>(songIndex<<span style="color: #000000;">songList.Length)
             {
                 </span><span style="color: #0000ff;">if</span> (songList[songIndex] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
                 {
                     </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> songList[songIndex];
                 }
                 </span><span style="color: #0000ff;">else</span><span style="color: #000000;">
                 {
                     </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">null</span><span style="color: #000000;">;
                 }
             }
             </span><span style="color: #0000ff;">return</span> <span style="color: #0000ff;">null</span><span style="color: #000000;">;
         } 
         </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #0000ff;">#region</span> 下一首要播放的歌曲名稱
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">string</span><span style="color: #000000;"> NextSongName()
         {
             </span><span style="color: #0000ff;">string</span> songName = <span style="color: #800000;">""</span>; <span style="color: #008000;">//</span><span style="color: #008000;"> 歌曲名稱</span>
             <span style="color: #0000ff;">if</span>(songIndex<<span style="color: #000000;">songList.Length)
             {
                 </span><span style="color: #0000ff;">if</span> (songList.Length > songIndex + <span style="color: #800080;">1</span><span style="color: #000000;">)
                 {
                     </span><span style="color: #0000ff;">if</span> (songList[songIndex + <span style="color: #800080;">1</span>] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
                     {
                         songName </span>= songList[songIndex + <span style="color: #800080;">1</span><span style="color: #000000;">].SongName;
                     }
                   
              
             }
           
           }
             </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> songName;
         } 
         </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #0000ff;">#region</span> 切歌：
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> CutSong()
         {
             </span><span style="color: #008000;">//</span><span style="color: #008000;">代表切歌的位置</span>
             <span style="color: #0000ff;">int</span> i =<span style="color: #000000;"> songIndex;  
            
             </span><span style="color: #0000ff;">if</span> (songList[i]!=<span style="color: #0000ff;">null</span><span style="color: #000000;">)
             {
                 songList[i].Setcut();
             }
             </span><span style="color: #0000ff;">while</span> (songList[i] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
             {
                 songList[i] </span>= songList[i + <span style="color: #800080;">1</span><span style="color: #000000;">];
                 i</span>++<span style="color: #000000;">;

                 </span><span style="color: #008000;">//</span><span style="color: #008000;"> 如果到達(dá)數(shù)組最后一個(gè)元素，就將最后一個(gè)元素指向空</span>
                 <span style="color: #0000ff;">if</span> (i ==<span style="color: #000000;"> songList.Length)
                 {
                     songList[i] </span>= <span style="color: #0000ff;">null</span><span style="color: #000000;">;
                 }
             }
             </span><span style="color: #0000ff;">if</span> (songList[<span style="color: #800080;">0</span>] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
             {
                 songList[</span><span style="color: #800080;">0</span>].Playseat =<span style="color: #000000;"> SongPlayState.played;
             }
         }
 
    </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #0000ff;">#region</span> 重放當(dāng)前歌曲
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> PlayAgain()
         {
             </span><span style="color: #0000ff;">if</span> (songList[songIndex] != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
             {
                 songList[songIndex].SetnewSong();
             }
         } 
         </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #0000ff;">#region</span> 播放下一首
         <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">static</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> MoveOn()
         {
             </span><span style="color: #0000ff;">if</span>(songIndex<<span style="color: #000000;">songList.Length)
             {
                 </span><span style="color: #0000ff;">if</span> (songList[songIndex] != <span style="color: #0000ff;">null</span> && songList[songIndex].Playseat ==<span style="color: #000000;"> SongPlayState.newplayed)
                 {
                     songList[songIndex].SetSongPlayed();
                 }
                 </span><span style="color: #0000ff;">else</span><span style="color: #000000;">
                 {
                     songIndex</span>++<span style="color: #000000;">;
                 }
             }
            
         }        
         </span><span style="color: #0000ff;">#endregion</span><span style="color: #000000;">
  
   }</span>

<span style="color: #0000ff;">#region</span> 讓窗體實(shí)現(xiàn)拖動(dòng)
        <span style="color: #0000ff;">public</span> Point mouSEOffset;        <span style="color: #008000;">//</span><span style="color: #008000;">記錄鼠標(biāo)指針的坐標(biāo)        </span>
        <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">bool</span> isMouseDown = <span style="color: #0000ff;">false</span>; <span style="color: #008000;">//</span><span style="color: #008000;">記錄鼠標(biāo)按鍵是否按下   </span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseDown(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #0000ff;">int</span><span style="color: #000000;"> xOffset;
            </span><span style="color: #0000ff;">int</span><span style="color: #000000;"> yOffset;
            </span><span style="color: #0000ff;">if</span> (e.Button ==<span style="color: #000000;"> MouseButtons.Left)
            {
                xOffset </span>= -e.X -<span style="color: #000000;"> SystemInformation.FrameBorderSize.Width;
                yOffset </span>= -e.Y - SystemInformation.CaptionHeight -<span style="color: #000000;"> SystemInformation.FrameBorderSize.Height;
                mouseOffset </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> Point(xOffset, yOffset);
                isMouseDown </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            }
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseMove(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> (isMouseDown)
            {
                Point mousePos </span>=<span style="color: #000000;"> Control.MousePosition;
                mousePos.Offset(mouseOffset.X </span>+ <span style="color: #800080;">5</span>, mouseOffset.Y + <span style="color: #800080;">30</span><span style="color: #000000;">);
                Location </span>=<span style="color: #000000;"> mousePos;
            }
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseUp(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 修改鼠標(biāo)狀態(tài)isMouseDown的值      
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 確保只有鼠標(biāo)左鍵按下并移動(dòng)時(shí)，才移動(dòng)窗體       </span>
            <span style="color: #0000ff;">if</span> (e.Button ==<span style="color: #000000;"> MouseButtons.Left)
            {
                isMouseDown </span>= <span style="color: #0000ff;">false</span><span style="color: #000000;">;
            }
        } 
        </span><span style="color: #0000ff;">#endregion</span>

 <span style="color: #008000;">//</span><span style="color: #008000;">當(dāng)前播放的歌曲</span>
        <span style="color: #0000ff;">public</span><span style="color: #000000;"> Song songname;

        </span><span style="color: #0000ff;">#region</span> 讓窗體實(shí)現(xiàn)拖動(dòng)
        <span style="color: #0000ff;">public</span> Point mouseOffset;        <span style="color: #008000;">//</span><span style="color: #008000;">記錄鼠標(biāo)指針的坐標(biāo)        </span>
        <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">bool</span> isMouseDown = <span style="color: #0000ff;">false</span>; <span style="color: #008000;">//</span><span style="color: #008000;">記錄鼠標(biāo)按鍵是否按下   </span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseDown(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #0000ff;">int</span><span style="color: #000000;"> xOffset;
            </span><span style="color: #0000ff;">int</span><span style="color: #000000;"> yOffset;
            </span><span style="color: #0000ff;">if</span> (e.Button ==<span style="color: #000000;"> MouseButtons.Left)
            {
                xOffset </span>= -e.X -<span style="color: #000000;"> SystemInformation.FrameBorderSize.Width;
                yOffset </span>= -e.Y - SystemInformation.CaptionHeight -<span style="color: #000000;"> SystemInformation.FrameBorderSize.Height;
                mouseOffset </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> Point(xOffset, yOffset);
                isMouseDown </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            }
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseMove(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> (isMouseDown)
            {
                Point mousePos </span>=<span style="color: #000000;"> Control.MousePosition;
                mousePos.Offset(mouseOffset.X </span>+ <span style="color: #800080;">5</span>, mouseOffset.Y + <span style="color: #800080;">30</span><span style="color: #000000;">);
                Location </span>=<span style="color: #000000;"> mousePos;
            }
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_MouseUp(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, MouseEventArgs e)
        {
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 修改鼠標(biāo)狀態(tài)isMouseDown的值      
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 確保只有鼠標(biāo)左鍵按下并移動(dòng)時(shí)，才移動(dòng)窗體       </span>
            <span style="color: #0000ff;">if</span> (e.Button ==<span style="color: #000000;"> MouseButtons.Left)
            {
                isMouseDown </span>= <span style="color: #0000ff;">false</span><span style="color: #000000;">;
            }
        } 
        </span><span style="color: #0000ff;">#endregion</span>

       <span style="color: #008000;">//</span><span style="color: #008000;"> 點(diǎn)擊退出按鈕觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnexit_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            application.Exit();  
        } 

       </span><span style="color: #008000;">//</span><span style="color: #008000;"> Login事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> FrmMain_Load(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            
           
            </span><span style="color: #008000;">//</span><span style="color: #008000;">把整個(gè)窗體對(duì)象賦給FrmByValue的靜態(tài)frM對(duì)象</span>
            FrmByValue.frM = <span style="color: #0000ff;">this</span><span style="color: #000000;">;
            </span><span style="color: #008000;">//</span><span style="color: #008000;">運(yùn)行窗體時(shí)啟動(dòng)定時(shí)器</span>
            <span style="color: #0000ff;">this</span><span style="color: #000000;">.tilist_played.Start();

            </span><span style="color: #008000;">//</span><span style="color: #008000;">調(diào)用查詢返回路徑的方法,傳入SQL語句
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 歌曲路徑</span>
            <span style="color: #0000ff;">string</span> sql = <span style="color: #800000;">"</span><span style="color: #800000;">select resource_path from Resource_path where resource_id=1</span><span style="color: #800000;">"</span><span style="color: #000000;">;
            KtvHelper.songURL </span>=<span style="color: #000000;"> song_path(sql);
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 歌手圖片路徑</span>
            <span style="color: #0000ff;">string</span> sql1 = <span style="color: #800000;">"</span><span style="color: #800000;">select resource_path from Resource_path where resource_id=2</span><span style="color: #800000;">"</span><span style="color: #000000;">;
            KtvHelper.singer_photoURL </span>=<span style="color: #000000;"> song_path(sql1);


        } 
        
        </span><span style="color: #808080;">///</span> <span style="color: #808080;"><summary></span>
        <span style="color: #808080;">///</span><span style="color: #008000;"> 查詢返回路徑的方法
        </span><span style="color: #808080;">///</span> <span style="color: #808080;"></summary></span>
        <span style="color: #808080;">///</span> <span style="color: #808080;"><param name="sql"></span><span style="color: #008000;">傳入sql語句</span><span style="color: #808080;"></param></span>
        <span style="color: #808080;">///</span> <span style="color: #808080;"><returns></span><span style="color: #008000;">根據(jù)傳入的sql語句返回不同的路徑(1.resource_id=1歌曲路徑:resource_id=2歌手圖片路徑)</span><span style="color: #808080;"></returns></span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">string</span> song_path(<span style="color: #0000ff;">string</span><span style="color: #000000;"> sql)
        {
            SqlConnection con </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlConnection(SqlHelper.str);
            SqlCommand cmd </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlCommand(sql, con);
            </span><span style="color: #0000ff;">string</span> path = <span style="color: #800000;">""</span><span style="color: #000000;">;
            </span><span style="color: #0000ff;">try</span><span style="color: #000000;">
            {
                con.Open();
                SqlDataReader dr </span>=<span style="color: #000000;"> cmd.ExecuteReader();

                </span><span style="color: #0000ff;">if</span> (dr != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
                {
                    </span><span style="color: #0000ff;">if</span><span style="color: #000000;"> (dr.HasRows)
                    {
                        </span><span style="color: #0000ff;">while</span><span style="color: #000000;"> (dr.Read())
                        {
                            path </span>= dr[<span style="color: #800000;">"</span><span style="color: #800000;">resource_path</span><span style="color: #800000;">"</span><span style="color: #000000;">].ToString();
                        }

                    }
                }
            }
            </span><span style="color: #0000ff;">catch</span><span style="color: #000000;"> (Exception)
            {


                MessageBox.Show(</span><span style="color: #800000;">"</span><span style="color: #800000;">網(wǎng)絡(luò)異常!</span><span style="color: #800000;">"</span><span style="color: #000000;">);
            }
            </span><span style="color: #0000ff;">finally</span><span style="color: #000000;">
            {
                con.Close();
            }
            </span><span style="color: #0000ff;">return</span><span style="color: #000000;"> path;
        }  
    
      </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊顯示播放觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnshow_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
        
      
         </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.Width == <span style="color: #800080;">567</span><span style="color: #000000;">)
         {
             </span><span style="color: #0000ff;">this</span>.Width = <span style="color: #0000ff;">this</span>.Width + <span style="color: #800080;">208</span><span style="color: #000000;">;
             btnshow.Text </span>= <span style="color: #800000;">"</span><span style="color: #800000;">隱 藏 播 放</span><span style="color: #800000;">"</span><span style="color: #000000;">;
         }
         </span><span style="color: #0000ff;">else</span> <span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.Width > <span style="color: #800080;">567</span><span style="color: #000000;">)
         {
             </span><span style="color: #0000ff;">this</span>.Width = <span style="color: #800080;">567</span><span style="color: #000000;">;
             btnshow.Text </span>= <span style="color: #800000;">"</span><span style="color: #800000;">顯 示 播 放</span><span style="color: #800000;">"</span><span style="color: #000000;">;
         }
          
        } 

       </span><span style="color: #008000;">//</span><span style="color: #008000;">已點(diǎn)歌曲窗體</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnopen_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            SelectedSong frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SelectedSong();
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
            frm.Show();
        }

 
  
        </span><span style="color: #008000;">//</span><span style="color: #008000;"> 點(diǎn)擊拼音點(diǎn)歌觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnspell_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            frmbySongname frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> frmbySongname();
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
            frm.Show();
            
        } 
     
      </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊字?jǐn)?shù)點(diǎn)歌觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnum_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            frmbyziSong frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> frmbyziSong();
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
            frm.Show();
        } 

        </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊類型點(diǎn)歌觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btntype_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            frmbyTypesong frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> frmbyTypesong();
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
            frm.Show();
        }

        </span><span style="color: #008000;">//</span><span style="color: #008000;">定時(shí)掃描歌曲列表，顯示當(dāng)前播放歌曲的名稱</span>
        <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> ShowPlayingSongName()
        {
            txtopen.Text </span>=<span style="color: #000000;"> PlayList.PlayingSongName();
            txtnext.Text </span>=<span style="color: #000000;"> PlayList.NextSongName();
        }

       </span><span style="color: #008000;">//</span><span style="color: #008000;">播放歌曲的方法</span>
        <span style="color: #0000ff;">public</span> <span style="color: #0000ff;">void</span><span style="color: #000000;"> PlaySong()
        {
            </span><span style="color: #008000;">//</span><span style="color: #008000;"> 獲取當(dāng)前要播放的歌曲</span>
            <span style="color: #0000ff;">this</span>.songname =<span style="color: #000000;"> PlayList.GetPlayingSong();
          
          
            </span><span style="color: #0000ff;">if</span> (songname != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
            {
                </span><span style="color: #0000ff;">#region</span> 播放時(shí)顯示歌曲圖片
                <span style="color: #0000ff;">string</span> name =<span style="color: #000000;"> songname.SongName;
                </span><span style="color: #0000ff;">string</span> sql = <span style="color: #800000;">"</span><span style="color: #800000;">select singer_id from song_info where song_name ='</span><span style="color: #800000;">"</span> + name + <span style="color: #800000;">"</span><span style="color: #800000;">' </span><span style="color: #800000;">"</span><span style="color: #000000;">;
                SqlConnection con </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlConnection(SqlHelper.str);
                con.Open();
                SqlCommand cmd </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlCommand(sql, con);
                </span><span style="color: #0000ff;">int</span> singerid =<span style="color: #000000;"> Convert.ToInt32(cmd.ExecuteScalar());
                con.Close();
                </span><span style="color: #0000ff;">string</span> sql1 = <span style="color: #800000;">"</span><span style="color: #800000;">select singer_photo from singer_info where singer_id=</span><span style="color: #800000;">"</span> + singerid + <span style="color: #800000;">""</span><span style="color: #000000;">;
                SqlConnection con1 </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlConnection(SqlHelper.str);
                con1.Open();
                SqlCommand cmd1 </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> SqlCommand(sql1, con1);
                </span><span style="color: #0000ff;">string</span> singer_photo =<span style="color: #000000;"> cmd1.ExecuteScalar().ToString();
                con1.Close();
                plist.Image </span>= Image.FromFile(KtvHelper.singer_photoURL +<span style="color: #000000;"> singer_photo); 
                </span><span style="color: #0000ff;">#endregion</span>
                <span style="color: #008000;">//</span><span style="color: #008000;"> 將當(dāng)前歌曲播放狀態(tài)設(shè)為已播放</span>
                <span style="color: #0000ff;">this</span><span style="color: #000000;">.songname.SetSongPlayed();
                
                </span><span style="color: #008000;">//</span><span style="color: #008000;"> 得到當(dāng)前播放歌曲的路徑</span>
                Playerlist.URL = KtvHelper.songURL +<span style="color: #000000;"> songname.SongURL;
               
            }
        } 
     
        </span><span style="color: #008000;">//</span><span style="color: #008000;">計(jì)時(shí)器控件的Tick事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> tilist_played_Tick(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
             ShowPlayingSongName();
            </span><span style="color: #0000ff;">if</span>(<span style="color: #0000ff;">this</span>.songname==<span style="color: #0000ff;">null</span><span style="color: #000000;">)
            {
                </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.PlaySong();
            }
            </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.Playerlist.playState ==<span style="color: #000000;"> WMPLib.WMPPlayState.wmppsStopped)
            {
                </span><span style="color: #0000ff;">this</span>.songname = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
                PlayList.MoveOn();
            }
            </span><span style="color: #0000ff;">if</span>(<span style="color: #0000ff;">this</span>.songname!=<span style="color: #0000ff;">null</span>&&<span style="color: #0000ff;">this</span>.songname.Playseat==<span style="color: #000000;">SongPlayState.cut)
            {
                </span><span style="color: #0000ff;">this</span>.Playerlist.URL = <span style="color: #800000;">""</span><span style="color: #000000;">;
                </span><span style="color: #0000ff;">this</span>.songname = <span style="color: #0000ff;">null</span><span style="color: #000000;">;
            
            }
            </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.songname != <span style="color: #0000ff;">null</span> && <span style="color: #0000ff;">this</span>.songname.Playseat ==<span style="color: #000000;"> SongPlayState.newplayed)
            {
                </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.PlaySong();
            
            }
   
        }

        </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊切歌觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnextsong_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.songname != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
            {
                PlayList.CutSong();
                
            }
            </span><span style="color: #0000ff;">else</span><span style="color: #000000;"> 
            {
                MessageBox.Show(</span><span style="color: #800000;">"</span><span style="color: #800000;">親!你還沒有添加歌曲</span><span style="color: #800000;">"</span><span style="color: #000000;">);
                
            }
           
        }

        </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊重唱觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnew_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            </span><span style="color: #0000ff;">if</span> (<span style="color: #0000ff;">this</span>.songname != <span style="color: #0000ff;">null</span><span style="color: #000000;">)
            {
                PlayList.PlayAgain();
            }
            </span><span style="color: #0000ff;">else</span><span style="color: #000000;">
            {
                MessageBox.Show(</span><span style="color: #800000;">"</span><span style="color: #800000;">親!你還沒有添加歌曲</span><span style="color: #800000;">"</span><span style="color: #000000;">);

            }
           
        }

        </span><span style="color: #008000;">//</span><span style="color: #008000;">點(diǎn)擊金曲排行觸發(fā)的時(shí)間</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnorderby_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            frmsonglist frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> frmsonglist();
            frm.ph </span>= <span style="color: #800080;">1</span><span style="color: #000000;">;
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
            frm.Show();

        }
        </span><span style="color: #008000;">//</span><span style="color: #008000;">歌星點(diǎn)歌</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnswan_Click_1(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            Frmbyswangetsong frm </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> Frmbyswangetsong();
            frm.Show();
            </span><span style="color: #0000ff;">this</span><span style="color: #000000;">.Hide();
        }

        </span><span style="color: #008000;">//</span><span style="color: #008000;">當(dāng)鼠標(biāo)進(jìn)入控件可見狀態(tài)是觸發(fā)的事件</span>
        <span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnswan_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnswan,</span><span style="color: #800000;">"</span><span style="color: #800000;">歌星點(diǎn)歌</span><span style="color: #800000;">"</span><span style="color: #000000;">);

        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnspell_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnspell, </span><span style="color: #800000;">"</span><span style="color: #800000;">拼音點(diǎn)歌</span><span style="color: #800000;">"</span><span style="color: #000000;">);
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnum_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnnum, </span><span style="color: #800000;">"</span><span style="color: #800000;">字?jǐn)?shù)點(diǎn)歌</span><span style="color: #800000;">"</span><span style="color: #000000;">);
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btntype_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
             ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btntype, </span><span style="color: #800000;">"</span><span style="color: #800000;">類型選擇</span><span style="color: #800000;">"</span><span style="color: #000000;">);
            
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnorderby_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnorderby, </span><span style="color: #800000;">"</span><span style="color: #800000;">金曲排行</span><span style="color: #800000;">"</span><span style="color: #000000;">);
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnew_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnnew, </span><span style="color: #800000;">"</span><span style="color: #800000;">重唱</span><span style="color: #800000;">"</span><span style="color: #000000;">); 
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnnextsong_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnnextsong, </span><span style="color: #800000;">"</span><span style="color: #800000;">切歌</span><span style="color: #800000;">"</span><span style="color: #000000;">); 
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnopen_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnopen, </span><span style="color: #800000;">"</span><span style="color: #800000;">已點(diǎn)</span><span style="color: #800000;">"</span><span style="color: #000000;">); 
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnfw_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnfw, </span><span style="color: #800000;">"</span><span style="color: #800000;">服務(wù)</span><span style="color: #800000;">"</span><span style="color: #000000;">); 
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnexit_MouseEnter(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {

            ToolTip tp </span>= <span style="color: #0000ff;">new</span><span style="color: #000000;"> ToolTip();
            tp.ShowAlways </span>= <span style="color: #0000ff;">true</span><span style="color: #000000;">;
            tp.SetToolTip(btnexit, </span><span style="color: #800000;">"</span><span style="color: #800000;">退出</span><span style="color: #800000;">"</span><span style="color: #000000;">); 
        }

        </span><span style="color: #0000ff;">private</span> <span style="color: #0000ff;">void</span> btnfw_Click(<span style="color: #0000ff;">object</span><span style="color: #000000;"> sender, EventArgs e)
        {
            MessageBox.Show(</span><span style="color: #800000;">"</span><span style="color: #800000;">正在呼叫服務(wù)...</span><span style="color: #800000;">"</span><span style="color: #000000;">);
        }</span>