如何在C#中检查Windows license状态？

using System;
using System.Management;

public class LicenseChecker
{
    public static void Main()
    {
        try
        {
            ManagementObjectSearcher searcher = new ManagementObjectSearcher("SELECT * FROM SoftwareLicensingProduct WHERE LicenseStatus <> 1");
            ManagementObjectCollection results = searcher.Get();

            if (results.Count > 0)
            {
                Console.WriteLine("Windows license is not activated or is in an invalid state.");
            }
            else
            {
                Console.WriteLine("Windows license is activated and valid.");
            }
        }
        catch (ManagementException e)
        {
            Console.WriteLine("An error occurred while querying Windows license status: " + e.Message);
        }
    }
}