Backup Connected Monitors to JSON (C#)

// BackupDesktopMonitorListToJson.cs
//
// Snapshots Connected Monitors (Win32_DesktopMonitor) to a timestamped JSON file.
//
// Requires the System.Management package:
//   dotnet new console -o BackupDesktopMonitor
//   dotnet add package System.Management
//   (replace the generated Program.cs with this file, then dotnet run)

using System;
using System.Collections.Generic;
using System.IO;
using System.Management;
using System.Text.Json;

var searcher = new ManagementObjectSearcher("SELECT Name, ScreenWidth, ScreenHeight FROM Win32_DesktopMonitor");
var results = new List<Dictionary<string, object?>>();

foreach (ManagementObject item in searcher.Get())
{
    var row = new Dictionary<string, object?>();
    row["Name"] = item["Name"];
        row["ScreenWidth"] = item["ScreenWidth"];
        row["ScreenHeight"] = item["ScreenHeight"];
    results.Add(row);
}

string timestamp = DateTime.Now.ToString("yyyyMMdd-HHmmss");
string outPath = $"desktopmonitor-snapshot_{timestamp}.json";
File.WriteAllText(outPath, JsonSerializer.Serialize(results, new JsonSerializerOptions { WriteIndented = true }));

Console.WriteLine($"Snapshot of Connected Monitors ({results.Count} items) saved to {outPath}");