■ Windows Media Player COM 객체를 사용해 MP3 파일을 재생하는 방법을 보여준다.
▶ MainForm.cs
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using System; using System.Windows.Forms; namespace TestProject { /// <summary> /// 메인 폼 /// </summary> public partial class MainForm : Form { //////////////////////////////////////////////////////////////////////////////////////////////////// Enumeration ////////////////////////////////////////////////////////////////////////////////////////// Private #region 재생 상태 /// <summary> /// 재생 상태 /// </summary> private enum PlayStatus { /// <summary> /// 재생 /// </summary> Play, /// <summary> /// 중단 /// </summary> Stop, /// <summary> /// 중지 /// </summary> Pause } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Field ////////////////////////////////////////////////////////////////////////////////////////// Private #region Field /// <summary> /// 미디어 플레이어 /// </summary> private MediaPlayer.MediaPlayerClass mediaPlayer; /// <summary> /// 타이머 /// </summary> private Timer timer; #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Constructor ////////////////////////////////////////////////////////////////////////////////////////// Public #region 생성자 - MainForm() /// <summary> /// 생성자 /// </summary> public MainForm() { InitializeComponent(); this.openFileDialog.RestoreDirectory = true; this.openFileDialog.CheckPathExists = true; this.openFileDialog.CheckFileExists = true; this.openFileDialog.Filter = "MP3 파일(*.mp3)|*.mp3"; this.openFileDialog.FilterIndex = 1; this.openFileDialog.DefaultExt = ".mp3"; this.timer = new Timer(); this.timer.Interval = 500; this.timer.Tick += timer_Tick; } #endregion //////////////////////////////////////////////////////////////////////////////////////////////////// Method ////////////////////////////////////////////////////////////////////////////////////////// Private //////////////////////////////////////////////////////////////////////////////// Event #region 타이머 틱 처리하기 - timer_Tick(sender, e) /// <summary> /// 타이머 틱 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void timer_Tick(object sender, EventArgs e) { this.positionTrackBar.Minimum = 0; this.positionTrackBar.Maximum = (int)this.mediaPlayer.Duration; this.positionTrackBar.Value = (int)this.mediaPlayer.CurrentPosition; string currentPosition = TimeSpan.FromSeconds(this.mediaPlayer.CurrentPosition).ToString(@"hh\:mm\:ss"); string duration = TimeSpan.FromSeconds(this.mediaPlayer.Duration).ToString(@"hh\:mm\:ss"); this.positionLabel.Text = $"{currentPosition} / {duration}"; } #endregion #region MP3 파일 열기 버튼 클릭시 처리하기 - openButton_Click(sender, e) /// <summary> /// MP3 파일 열기 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void openButton_Click(object sender, EventArgs e) { if(this.openFileDialog.ShowDialog(this) == DialogResult.OK) { if(this.mediaPlayer == null) { this.mediaPlayer = new MediaPlayer.MediaPlayerClass(); } this.mediaPlayer.FileName = this.openFileDialog.FileName; this.mediaPlayer.Stop(); SetPlayStatusLabelData(PlayStatus.Stop); this.filePathTextBox.Text = this.openFileDialog.FileName; this.volumeTrackBar.Value = GetTrackBarValue(-1200, 0, this.mediaPlayer.Volume); this.volumeLabel.Text = this.volumeTrackBar.Value.ToString(); } } #endregion #region 재생 버튼 클릭시 처리하기 - playButton_Click(sender, e) /// <summary> /// 재생 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void playButton_Click(object sender, EventArgs e) { this.mediaPlayer.Play(); this.timer.Start(); SetPlayStatusLabelData(PlayStatus.Play); } #endregion #region 중단 버튼 클릭시 처리하기 - stopButton_Click(sender, e) /// <summary> /// 중단 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void stopButton_Click(object sender, EventArgs e) { this.mediaPlayer.Stop(); this.timer.Stop(); SetPlayStatusLabelData(PlayStatus.Stop); } #endregion #region 정지 버튼 클릭시 처리하기 - pauseButton_Click(sender, e) /// <summary> /// 정지 버튼 클릭시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void pauseButton_Click(object sender, EventArgs e) { this.mediaPlayer.Pause(); SetPlayStatusLabelData(PlayStatus.Pause); } #endregion #region 볼륨 트랙바 스크롤시 처리하기 - volumeTrackBar_Scroll(sender, e) /// <summary> /// 볼륨 트랙바 스크롤시 처리하기 /// </summary> /// <param name="sender">이벤트 발생자</param> /// <param name="e">이벤트 인자</param> private void volumeTrackBar_Scroll(object sender, EventArgs e) { this.volumeLabel.Text = this.volumeTrackBar.Value.ToString(); int volumn = GetVolume(-1200, 0, this.volumeTrackBar.Value); if(this.volumeTrackBar.Value == 0) { this.mediaPlayer.Mute = true; } else { this.mediaPlayer.Mute = false; this.mediaPlayer.Volume = volumn; } } #endregion //////////////////////////////////////////////////////////////////////////////// Function #region 트랙바 값 구하기 - GetTrackBarValue(minimumVolume, maximumVolume, volume) /// <summary> /// 트랙바 값 구하기 /// </summary> /// <param name="minimumVolume">최소 볼륨</param> /// <param name="maximumVolume">최대 볼륨</param> /// <param name="volume">볼륨</param> /// <returns>트랙바 값</returns> private int GetTrackBarValue(int minimumVolume, int maximumVolume, int volume) { double range = maximumVolume - minimumVolume; double targetValue = volume - minimumVolume; return (int)(targetValue / range * 100); } #endregion #region 볼륨 구하기 - GetVolume(minimumValue, maximumValue, value) /// <summary> /// 볼륨 구하기 /// </summary> /// <param name="minimumValue">최소값</param> /// <param name="maximumValue">최대값</param> /// <param name="value">값</param> /// <returns>볼륨</returns> private int GetVolume(int minimumValue, int maximumValue, int value) { double range = maximumValue - minimumValue; double targetVolume = range * value / 100; return (int)(targetVolume + minimumValue); } #endregion #region 재생 상태 레이블 데이터 설정하기 - SetPlayStatusLabelData(playStatus) /// <summary> /// 재생 상태 레이블 데이터 설정하기 /// </summary> /// <param name="playStatus">재생 상태</param> private void SetPlayStatusLabelData(PlayStatus playStatus) { switch(playStatus) { case PlayStatus.Play : this.playStatusTextBox.Text = "재생"; break; case PlayStatus.Stop : this.playStatusTextBox.Text = "중단"; break; case PlayStatus.Pause : this.playStatusTextBox.Text = "정지"; break; } } #endregion } } |
