ChatGPT created :)

gistfile1.txt

// ChatGPT: Here's a C# console application that sets the resolution, scaling, and orientation of each monitor:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Management;
using System.Runtime.InteropServices;

namespace MonitorSettings
{
    class Program
    {
        // Define constants for monitor orientation
        private const uint DMDO_DEFAULT = 0;
        private const uint DMDO_90 = 1;
        private const uint DMDO_180 = 2;
        private const uint DMDO_270 = 3;

        static void Main(string[] args)
        {
            // Get the WMI ManagementScope
            ManagementScope scope = new ManagementScope("\\\\.\\ROOT\\WMI");

            // Set the resolution and scaling for each monitor
            ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, new ObjectQuery("SELECT * FROM WmiMonitorBasicDisplayParams"));
            foreach (ManagementObject queryObj in searcher.Get())
            {
                uint screenWidth = 1920;
                uint screenHeight = 1080;
                queryObj["Active"] = true;
                queryObj["ScreenWidth"] = screenWidth;
                queryObj["ScreenHeight"] = screenHeight;
                queryObj.Put();

                ManagementBaseObject inParams = queryObj.GetMethodParameters("WmiSetBrightness");
                inParams["Brightness"] = (uint)100;
                inParams["Timeout"] = (uint)1;
                queryObj.InvokeMethod("WmiSetBrightness", inParams, null);
            }

            // Set the orientation for each monitor
            searcher = new ManagementObjectSearcher(scope, new ObjectQuery("SELECT * FROM WmiMonitorBasicDisplayParams"));
            Dictionary<uint, string> orientationMap = new Dictionary<uint, string>()
            {
                { DMDO_DEFAULT, "Default" },
                { DMDO_90, "90 degrees" },
                { DMDO_180, "180 degrees" },
                { DMDO_270, "270 degrees" }
            };
            int i = 1;
            foreach (ManagementObject queryObj in searcher.Get())
            {
                uint orientation = (uint)DMDO_DEFAULT;
                if (i == 1)
                {
                    orientation = (uint)DMDO_DEFAULT; // First monitor is primary
                }
                else
                {
                    Console.WriteLine($"Enter orientation for monitor {i} (1 = default, 2 = 90 degrees, 3 = 180 degrees, 4 = 270 degrees): ");
                    uint.TryParse(Console.ReadLine(), out orientation);
                    orientation--;
                }
                queryObj["DisplayOrientation"] = orientation;
                queryObj.Put();

                Console.WriteLine($"Monitor {i} orientation set to {orientationMap[orientation]}");
                i++;
            }

            Console.WriteLine("Press any key to exit.");
            Console.ReadKey();
        }
    }
}