using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Diagnostics;
using System.Management;

namespace TestForRequiredCheckings
{
    class Program
    {
        static void GetCompParametersAndDiskspaceThroughWMI() 
        {
          ManagementScope scope = new ManagementScope("\\\\HostName\\root\\cimv2");
          scope.Connect(); 
          ObjectQuery query = new ObjectQuery("SELECT * FROM Win32_OperatingSystem");
          SelectQuery query1 = new SelectQuery("Select * from Win32_LogicalDisk");
          SelectQuery query2 = new SelectQuery("Select FreeSpace from Win32_LogicalDisk WHERE Name='C:'"); 
 
          ManagementObjectSearcher searcher = new ManagementObjectSearcher(scope, query); 
          ManagementObjectCollection queryCollection = searcher.Get(); 

          ManagementObjectSearcher searcher1 = new ManagementObjectSearcher(scope, query1); 
          ManagementObjectCollection queryCollection1 = searcher1.Get(); 
 
          foreach (ManagementObject m in queryCollection) 
          { 
              // Display the remote computer information  
              Console.WriteLine("Computer Name : {0}", m["csname"]); 
              Console.WriteLine("Windows Directory : {0}", m["WindowsDirectory"]); 
              Console.WriteLine("Operating System: {0}", m["Caption"]); 
              Console.WriteLine("Version: {0}", m["Version"]); 
              Console.WriteLine("Manufacturer : {0}", m["Manufacturer"]); 
              Console.WriteLine(); 
          } 
 
          foreach (ManagementObject mo in queryCollection1) 
          { 
             // Display Logical Disks information 
             Console.WriteLine();
             Console.WriteLine("              Disk Name : {0}", mo["Name"]);
             Console.WriteLine("              Disk Size : {0}", mo["Size"]); 
             Console.WriteLine("              FreeSpace : {0}", mo["FreeSpace"]);
             Console.WriteLine("          Disk DeviceID : {0}", mo["DeviceID"]);
             Console.WriteLine("        Disk VolumeName : {0}", mo["VolumeName"]);
             Console.WriteLine("        Disk SystemName : {0}", mo["SystemName"]);
             Console.WriteLine("Disk VolumeSerialNumber : {0}", mo["VolumeSerialNumber"]);              
          }

          ManagementObjectSearcher searcher2 = new ManagementObjectSearcher(scope, query2);
          ManagementObjectCollection queryCollection2 = searcher2.Get();

          Console.WriteLine(" Текущее количество свободного места на диске C: {0}", 
               queryCollection2.Cast<ManagementObject>().First()["FreeSpace"]);
        }


        static void Main(string[] args) 
        {
            GetCompParametersAndDiskspaceThroughWMI();

            Console.ReadKey();
        }
    }
}