How to turn on/off the flashlight in Win8.1 tablet

Try this out:

 <Grid Background="{ThemeResource ApplicationPageBackgroundThemeBrush}">
  <Button x:Name="TorchButton" Content="Turn Torch On" Click="TorchButton_Click"/>
</Grid>

MediaCapture MyMediaCapture = new MediaCapture();

        private async void TorchButton_Click(object sender, RoutedEventArgs e)
        {
            await MyMediaCapture.InitializeAsync();
            var MyVideoDeviceController = MyMediaCapture.VideoDeviceController;
            var MyTorch = MyVideoDeviceController.TorchControl;

            if (MyTorch.Supported)
            {
                if ((TorchButton.Content as string) == "Turn Torch On")
                {
                    TorchButton.Content = "Turn Torch Off";
                    MyTorch.PowerPercent = 100;
                    MyTorch.Enabled = true;
                }
                else
                {
                    TorchButton.Content = "Turn Torch On";
                    MyTorch.PowerPercent = 0;
                    MyTorch.Enabled = false;
                }
            }
            else
            {
                TorchButton.Content = "Torch not supported!";
            }
        }
    }

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Matt Small - Microsoft Escalation Engineer - Forum Moderator

If my reply answers your question, please mark this post as answered.



NOTE: If I ask for code, please provide something that I can drop directly into a project and run (including XAML), or an actual application project. I'm trying to help a lot of people, so I don't have time to figure out weird snippets with undefined objects and unknown namespaces.