Получение / установка яркости монитора через управляемый вызов WMI

                        
public static ushort GetMonitorBrightness() {

    using (var mclass = new ManagementClass("WmiMonitorBrightness")) {

        mclass.Scope = new ManagementScope(@"\.rootwmi");

        using (var instances = mclass.GetInstances()) {

            foreach (ManagementObject instance in instances) {

                return (byte) instance.GetPropertyValue("CurrentBrightness");

            }

        }

    }

    return 0;

}

 

public static void SetMonitorBrightness(ushort brightness) {

    using (var mclass = new ManagementClass("WmiMonitorBrightnessMethods")) {

        mclass.Scope = new ManagementScope(@"\.rootwmi");

        using (var instances = mclass.GetInstances()) {

            foreach (ManagementObject instance in instances) {

                object[] args = new object[] { 1, brightness };

                instance.InvokeMethod("WmiSetBrightness", args);

            }

        }

    }

}