BrightnessTray.WmiFunctions.SetBrightnessLevel C# (CSharp) Метод

        internal static void SetBrightnessLevel(int brightnessLevel)
        {
            if (brightnessLevel < 0 ||
                brightnessLevel > 100)
                throw new ArgumentOutOfRangeException("brightnessLevel");

            try
            {
                var s = new ManagementScope("root\\WMI");
                var q = new SelectQuery("WmiMonitorBrightnessMethods");
                var mos = new ManagementObjectSearcher(s, q);
                var moc = mos.Get();

                foreach (var managementBaseObject in moc)
                {
                    var o = (ManagementObject)managementBaseObject;
                    o.InvokeMethod("WmiSetBrightness", new object[]
                    {
                        UInt32.MaxValue,
                        brightnessLevel
                    });
                }

                moc.Dispose();
                mos.Dispose();
            }
            catch (ManagementException ex)
            {
                // ignore
                // it is possible that laptop lid is closed, and using external monitor
            }
            catch (Exception ex)
            {
                Console.WriteLine(ex.ToString());
            }
        }

        /// <summary>
        /// Change the monitor brightness when the slider value changes.
        /// </summary>
        private void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs <double> e)
        {
            var newBrightness = (int)e.NewValue;

            // Change the brightness in a background thread to avoid UI blocking
            new Thread((data) =>
            {
                WmiFunctions.SetBrightnessLevel((int)newBrightness);
            }).Start();

            this.percentageLabel.Content = newBrightness.ToString() + "%";
            DrawIcon.updateNotifyIcon(NotifyIcon, newBrightness);
        }