ManagementReferenceAttribute Class (System.Management.Instrumentation)

<AttributeUsageAttribute(AttributeTargets.Property Or AttributeTargets.Field Or AttributeTargets.Parameter, AllowMultiple := False)> _
<HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort := True)> _
Public NotInheritable Class ManagementReferenceAttribute _
	Inherits Attribute

[AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Field|AttributeTargets.Parameter, AllowMultiple = false)]
[HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)]
public sealed class ManagementReferenceAttribute : Attribute

[AttributeUsageAttribute(AttributeTargets::Property|AttributeTargets::Field|AttributeTargets::Parameter, AllowMultiple = false)]
[HostProtectionAttribute(SecurityAction::LinkDemand, MayLeakOnAbort = true)]
public ref class ManagementReferenceAttribute sealed : public Attribute

[<Sealed>]
[<AttributeUsageAttribute(AttributeTargets.Property|AttributeTargets.Field|AttributeTargets.Parameter, AllowMultiple = false)>]
[<HostProtectionAttribute(SecurityAction.LinkDemand, MayLeakOnAbort = true)>]
type ManagementReferenceAttribute =  
    class
        inherit Attribute
    end

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

[assembly: WmiConfiguration("root/assoc", HostingModel = ManagementHostingModel.Decoupled)]

[System.ComponentModel.RunInstaller(true)]
public class TheInstaller : DefaultManagementInstaller
{ }


namespace AssocExample
{
    class Program
    {
        static void Main(string[] args)
        {
            InstrumentationManager.RegisterType(typeof(NumberPhonetic));
            InstrumentationManager.RegisterType(typeof(NumberLetter));
            InstrumentationManager.RegisterType(typeof(LetterPhonetic));

            Console.WriteLine("Press enter to exit");
            Console.ReadLine();

            InstrumentationManager.UnregisterType(typeof(NumberPhonetic));
            InstrumentationManager.UnregisterType(typeof(NumberLetter));
            InstrumentationManager.UnregisterType(typeof(LetterPhonetic));
             
        }
    }

  [ManagementEntity]
    public class NumberPhonetic
    {
        [ManagementKey]
        public int Number;

        [ManagementProbe]
        public string Name;

        [ManagementBind]
        public NumberPhonetic(int Number)
        {
           this.Number = Number;
           if(Number == 1)
           {
              Name = "alpha";
           }
           else if(Number == 2)
           {
              Name = "bravo";
           }
           else
           {
              throw new InstanceNotFoundException();
           }
        }

        [ManagementEnumerator]
        static public IEnumerable EnumerateInstances()
        {
            for (int i = 1; i < 3; i++)
            {
                yield return new NumberPhonetic(i);
            }
        }
           
    }

    [ManagementEntity]
    public class NumberLetter
    {
        [ManagementKey]
        public int Number;

        [ManagementProbe]
        public string Letter;

        [ManagementBind]
        public NumberLetter(int Number)
        {
           this.Number = Number;
           if(Number == 1)
           {
              Letter = "A";
           }
           else if(Number == 2)
           {
              Letter = "B";
           }
           else
           {
              throw new InstanceNotFoundException();
           }
        }

        [ManagementEnumerator]
        static public IEnumerable EnumerateInstances()
        {
            for (int i = 1; i < 3; i++)
            {
                yield return new NumberLetter(i);
            }
        }

    }

    [ManagementEntity]
    [ManagementQualifier("Association", Flavor = ManagementQualifierFlavors.DisableOverride)]
    public class LetterPhonetic
    {
        [ManagementReference(Type = "NumberLetter")]
        [ManagementKey]
        public string LetterNumber;

        [ManagementReference(Type = "NumberPhonetic")]
        [ManagementKey]
        public string PhoneticNumber;

        [ManagementEnumerator]
        static public IEnumerable EnumerateInstances()
        {
            ArrayList insts = new ArrayList();
            for (int i = 1; i < 3; i++)
            {
                LetterPhonetic inst = new LetterPhonetic();
                inst.LetterNumber = "Letter = " + i;
                inst.PhoneticNumber = "Phonetic = " + i;
                insts.Add(inst);
            }
            return insts;
        }

    }

}