Windows Phone 8.1滑块中的音量级别不变

Question

I am trying to change the valume of the phone while song is playing.
I did that:

        BackgroundMediaPlayer.Current.Volume = (double)VolumeSlider.Value;    

but, when I use the slider, it only turns music off when its on zero, and on otherwise, but it doesnt change the level.

Answer 1

Note that, the volume range is 0~1. You must divide slider value by slider maximum.

BackgroundMediaPlayer.Current.Volume = (double)VolumeSlider.Value/VolumeSlider.Maximum; 

Answer 2

MediaElement volume range 0-1. So, you should set the slider value within this range.

<Slider Name="VolumeSlider"
        Background="White"                                 
        Foreground="Red"
        Minimum="0"
        Maximum="1"
        SmallChange="0.1"
        LargeChange="0.2"
        Value ="0.5" />

 BackgroundMediaPlayer.Current.Volume = (double)VolumeSlider.Value;