c# - 如何在C#中暂停和恢复音频

我正在wpf应用程序上。我想暂停并恢复音频，但歌曲从头开始播放。

//c# code

System.Media.SoundPlayer sp = new System.Media.SoundPlayer(@"D:\Intro.wav");
private void play_Click(object sender, EventArgs e)
{
    sp.Play();
    play_btn.Enabled = false;
    stop_btn.Enabled = true;
}

private void stop_Click(object sender, EventArgs e)
{
    sp.Stop();
    stop_btn.Enabled = false;
    play_btn.Enabled = true;
}

最佳答案

使用System.Windows.Controls.MediaElement而不是System.Media.SoundPlayer。它具有Pause函数。

<Grid>
    <Grid.RowDefinitions>
        <RowDefinition Height="320*"/>
        <RowDefinition Height="50*"/>
    </Grid.RowDefinitions>
    <MediaElement x:Name="MediaPlayer" Grid.RowSpan="1" LoadedBehavior="Manual"/>
    <StackPanel Orientation="Horizontal" Grid.Row="1" HorizontalAlignment="Center">
        <Button x:Name="btnPlay" Content="Play" Click="btnPlay_Click" Width="50" Height="25" Margin="5"/>
        <Button x:Name="btnStop" Content="Stop" Click="btnStop_Click" Width="50" Height="25" Margin="5"/>
        <Button x:Name="btnMoveBack" Content="Back" Click="btnMoveBack_Click" Width="50" Height="25" Margin="5"/>
        <Button x:Name="btnMoveForward" Content="Forward" Click="btnMoveForward_Click" Width="50" Height="25" Margin="5"/>
    </StackPanel>
</Grid>

private void IsPlaying(bool flag)
{
    btnPlay.IsEnabled = flag;
    btnStop.IsEnabled = flag;
    btnMoveBack.IsEnabled = flag;
    btnMoveForward.IsEnabled = flag;
}

private void btnPlay_Click(object sender, RoutedEventArgs e)
{
    IsPlaying(true);
    if (btnPlay.Content.ToString() == "Play")
    {
        MediaPlayer.Play();
        btnPlay.Content = "Pause";
    }
    else
    {
        MediaPlayer.Pause();
        btnPlay.Content = "Play";
    }
}

private void btnStop_Click(object sender, RoutedEventArgs e)
{
    MediaPlayer.Pause();
    btnPlay.Content = "Play";
    IsPlaying(false);
    btnPlay.IsEnabled = true;
}

private void btnMoveBack_Click(object sender, RoutedEventArgs e)
{
    MediaPlayer.Position -= TimeSpan.FromSeconds(10);
}

private void btnMoveForward_Click(object sender, RoutedEventArgs e)
{
    MediaPlayer.Position += TimeSpan.FromSeconds(10);
}

关于c# - 如何在C#中暂停和恢复音频，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31944522/