using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

         ManagementScope scope;

                SelectQuery query;

​

                scope = new ManagementScope("root\\WMI");

                query = new SelectQuery("SELECT * FROM WmiMonitorBrightness");

​

                using (ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query))

                {

                    using (ManagementObjectCollection objectCollection = searcher.Get())

                    {

                        foreach (ManagementObject mObj in objectCollection)

                        {

                            //Console.WriteLine(mObj.ClassPath);

                            foreach (var item in mObj.Properties)

                            {

                                //Console.WriteLine(item.Name + " " + item.Value.ToString());

                                if (item.Name == "CurrentBrightness")

                                {

                                    retval = Convert.ToInt32(item.Value);

                                }

            //Do something with CurrentBrightness

                            }

                        }

                    }

                }

    }

}