//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ManagementObject o = new ManagementObject();

        // Now set the path on this object to
        // bind it to a 'real' manageable entity
        o.Path = 
            new ManagementPath("Win32_LogicalDisk='c:'"); 

        //Now it can be used 
        Console.WriteLine(o["FreeSpace"]);
        
        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ManagementPath p = 
            new ManagementPath(
            "Win32_Service.Name='Alerter'");
        ManagementObject o = new ManagementObject(p);

        //Now it can be used 
        Console.WriteLine(o["Name"]);
        
        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ManagementObject o =
            new ManagementObject("Win32_Service.Name='Alerter'");
   
        //or with a full path :
   
        ManagementObject mObj =
            new ManagementObject(
            "\\\\MyServer\\root\\MyApp:MyClass.Key='abc'");

        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ManagementPath p = 
            new ManagementPath("Win32_Service");
   
        // Set options for no context info
        // but requests amended qualifiers 
        // to be contained in the object
        ObjectGetOptions opt = 
            new ObjectGetOptions(
            null, System.TimeSpan.MaxValue, true);    

        ManagementClass c = 
            new ManagementClass(p, opt);
   
        Console.WriteLine(
            c.Qualifiers["Description"].Value);
        
        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        // Set options for no context info, 
        // but requests amended qualifiers
        // to be contained in the object
        ObjectGetOptions opt = 
            new ObjectGetOptions(null, System.TimeSpan.MaxValue, true); 

        ManagementObject o = 
            new ManagementObject(
            "Win32_Service", opt);
   
        Console.WriteLine(o.GetQualifierValue("Description"));
        
        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ManagementScope s = new ManagementScope(
            "\\\\MyMachine\\root\\cimv2");
        ManagementPath p = 
            new ManagementPath(
            "Win32_Service");

        // Set options for no context info,
        // but requests amended qualifiers 
        // to be contained in the object
        ObjectGetOptions opt = 
            new ObjectGetOptions(
            null, TimeSpan.MaxValue, true); 

        ManagementObject o = new ManagementObject(s, p, opt);

        Console.WriteLine(o.Qualifiers["Description"].Value);

        return 0;
    }
}

//引入命名空间
using System;
using System.Management;
   
class Sample
{
    public static int Main(string[] args) 
    {
        ObjectGetOptions opt = 
            new ObjectGetOptions(null, System.TimeSpan.MaxValue, true);
        ManagementObject o = 
            new ManagementObject(
            "root\\MyNamespace", "MyClass", opt);

        return 0;
    }
}