The playing principle of the KTV karaoke System and the working principle of the ktv karaoke System

The playing principle of the KTV karaoke System and the working principle of the ktv karaoke System
Playing principle of the karaoke song system of Beida qingniao

Instructor-former Yuming

 

1. First, we know there are two classes (PlayList Song)

There is a method in the PlayList class.

Public static bool AddSong (Song song)

{

Bool success = false; // record whether the song is successfully added

For (int I = 0; I <SongList. Length; I ++)

{

// Locate the first null position in the array

If (SongList [I] = null)

{

SongList [I] = song;

Success = true;

Break;

}

}

Return success;

}

 

2. Place the selected song object to an array in the PlayList class.

Song song = new Song ();

Song. SongName = dgvSong. SelectedRows [0]. Cells ["songName"]. Value. ToString (); record the current song

Song. SongURL = KtvUnit. SongPath + "\" + dgvSong. SelectedRows [0]. Cells ["songURL"]. Value. ToString ();

// MessageBox. Show (song. SongURL );

PlayList. AddSong (song );

 

3. Timer control 1 s Enable = true Tick Click Event in FrmMian

If (Player1.playstate = Vmpplayer. stopped)

{

Song = null;

PlayList. MoveOn (); // when the song is played to the last second, play the next one.

}

4. public static void MoveOn ()

{

If (SongList [SongIndex]! = Null & SongList [SongIndex]. PlayState = SongPlayState. again)

// If the current playing song is not empty and the status is Replay

{

SongList [SongIndex]. SetSongPlayed (); // The status is changed to played.

}

Else

{

SongIndex ++; // execute ++ to play the next video

}

}

5. public void SongList ()'

{

LvSong. Items. Clear ();

For (int I = 0; I <PlayList. SongList. Length; I ++)

{

If (PlayList. SongList [I]! = Null)

{

ListViewItem item = new ListViewItem ();

Item. Text = PlayList. SongList [I]. SongName;

Item. Tag = I;

String playstate = PlayList. SongList [I]. PlayState = SongPlayState. unplayed? "Not played": "played ";

Item. SubItems. Add (playstate );

LvSong. Items. Add (item );

}

}

}