C# .NET - Get HardDisk Serial number in all windows

Please if anyone knows how to Get HardDisk Serial number in any windows 
either by coding or adding Alibrary please help me

using System;
using System.Collections;
using System.Management;

namespace HardDriveSample1
{
	class HardDrive
	{
		private string model = null;
		private string type = null;
		private string serialNo = null;
		public string Model
		{
			get {return model;}
			set {model = value;}
		}

		public string Type
		{
			get {return type;}
			set {type = value;}
		}

		public string SerialNo
		{
			get {return serialNo;}
			set {serialNo = value;}
		}
	}

	class TestProgram
	{		
		[STAThread]
		static void Main(string[] args)
		{
			ArrayList hdCollection = new ArrayList();
			ManagementObjectSearcher searcher = new
				ManagementObjectSearcher("SELECT * FROM Win32_DiskDrive");
			foreach(ManagementObject wmi_HD in searcher.Get())
			{
				HardDrive hd = new HardDrive();
				hdCollection.Add(hd);
			}
		 	searcher = new
				ManagementObjectSearcher("SELECT * FROM Win32_PhysicalMedia");
			int i = 0;
			foreach(ManagementObject wmi_HD in searcher.Get())
			{
				HardDrive hd = (HardDrive)hdCollection[i];
				// get the hardware serial no.
				if (wmi_HD["SerialNumber"] == null)
					hd.SerialNo = "None";
				else
					hd.SerialNo = wmi_HD["SerialNumber"].ToString();
				++i;
			}

			foreach(HardDrive hd in hdCollection)
			{
				Console.WriteLine("Model\t\t: " + hd.Model);
				Console.WriteLine("Type\t\t: " + hd.Type);
				Console.WriteLine("Serial No.\t: " + hd.SerialNo);
				Console.WriteLine();
			}
			
			Console.WriteLine("Press [Enter] to exit...");
			Console.ReadLine();
		}
	}
}