MemoryMetrics.cs

using System;
using System.Management;

namespace Chyron.Maps.Render.Maint
{
    public class MemoryMetrics
    {
        public double TotalGB { get; set; }
        public double UsedGB { get; set; }
        public double FreeGB { get; set; }

        public static MemoryMetrics GetMemoryMetrics()
        {
            var winQuery = new ObjectQuery("SELECT * FROM CIM_OperatingSystem");

            var searcher = new ManagementObjectSearcher(winQuery);
            MemoryMetrics metrics = default;

            foreach (var item in searcher.Get())
            {
                metrics = new MemoryMetrics
                {
                    TotalGB = Math.Round(double.Parse(item["TotalVisibleMemorySize"].ToString()) / 1024 / 1024, 0),
                    FreeGB = Math.Round(double.Parse(item["FreePhysicalMemory"].ToString()) / 1024 / 1024, 0),
                };
                metrics.UsedGB = metrics.TotalGB - metrics.FreeGB;
            }
            return metrics;
        }
    }
}