AddKvpItems method of the Msvm_VirtualSystemManagementService class

uint32 AddKvpItems(
  [in]   CIM_ComputerSystem REF TargetSystem,
  [in]   string DataItems[],
  [out]  CIM_ConcreteJob REF Job
);

using System;
using System.Management;

namespace HyperVSamples
{
    class AddKvpItemsClass
    {
        static void AddKvpItems(string vmName, string itemName, string itemValue)
        {
            ManagementScope scope = new ManagementScope(@"root\virtualization", null);
            ManagementObject virtualSystemService = Utility.GetServiceObject(scope, "Msvm_VirtualSystemManagementService");
            ManagementBaseObject inParams = virtualSystemService.GetMethodParameters("AddKvpItems");
            ManagementClass kvpExchangeDataItem = new ManagementClass(scope, new ManagementPath("Msvm_KvpExchangeDataItem"), null);

            ManagementObject dataItem = kvpExchangeDataItem.CreateInstance();

            dataItem["Data"] = itemValue;
            dataItem["Name"] = itemName;
            dataItem["Source"] = 0;

            string[] dataItems = new string[1];
            dataItems[0] = dataItem.GetText(TextFormat.CimDtd20);

            ManagementObject vm = Utility.GetTargetComputer(vmName, scope);
            inParams["TargetSystem"] = vm.Path.Path;
            inParams["DataItems"] = dataItems;

            ManagementBaseObject outParams = virtualSystemService.InvokeMethod("AddKvpItems", inParams, null);

            if ((UInt32)outParams["ReturnValue"] == ReturnCode.Started)
            {
                if (Utility.JobCompleted(outParams, scope))
                {
                    Console.WriteLine("Resources were added successfully.");

                }
                else
                {
                    Console.WriteLine("Failed to add resources");
                }
            }
            else if ((UInt32)outParams["ReturnValue"] == ReturnCode.Completed)
            {
                Console.WriteLine("Resources were added successfully.");
            }
            else
            {
                Console.WriteLine("Add virtual system Kvp items failed with error {0}", outParams["ReturnValue"]);
            }

            if (inParams != null)
            {
                inParams.Dispose();
            }

            if (outParams != null)
            {
                outParams.Dispose();
            }
        }

        static void Main(string[] args)
        {
            if (args != null && args.Length != 3)
            {
                Console.WriteLine("Usage: AddKvpItems vmName itemName itemValue");
                return;
            }
            AddKvpItems(args[0], args[1], args[2]);
        }
    }
}

option explicit 

dim objWMIService
dim managementService
dim fileSystem


const JobStarting = 3
const JobRunning = 4
const JobCompleted = 7
const wmiStarted = 4096
const wmiSuccessful = 0

Main()

'-----------------------------------------------------------------
' Main
'-----------------------------------------------------------------
Sub Main()

    dim computer, vmName, itemName, itemValue, myVm, objArgs
    
    set fileSystem = Wscript.CreateObject("Scripting.FileSystemObject")

    computer = "."

    set objWMIService = GetObject("winmgmts:\\" & computer & "\root\virtualization")
    set managementService = objWMIService.ExecQuery("select * from Msvm_VirtualSystemManagementService").ItemIndex(0)

    set objArgs = WScript.Arguments
    if WScript.Arguments.Count = 3 then
        vmName = objArgs.Unnamed.Item(0)
        itemName = objArgs.Unnamed.Item(1)
        itemValue = objArgs.Unnamed.Item(2)
    else
        WScript.Echo "usage: cscript AddKvpItems.vbs vmName itemName itemValue"
        WScript.Quit(1)
    end if

    set myVm = GetComputerSystem(vmName)

    if AddKvpItems(myVm, itemName, itemValue) then

        WriteLog "Done"
        WScript.Quit(0)

    else
        WriteLog "AddKvpItems failed"
        WScript.Quit(1)
    end if

End Sub

'-----------------------------------------------------------------
' Retrieve Msvm_VirtualComputerSystem from base on its ElementName
'-----------------------------------------------------------------
Function GetComputerSystem(vmElementName)
    On Error Resume Next
    dim query
    query = Format1("select * from Msvm_ComputerSystem where ElementName = '{0}'", vmElementName)
    set GetComputerSystem = objWMIService.ExecQuery(query).ItemIndex(0)
    if (Err.Number <> 0) then
        WriteLog Format1("Err.Number: {0}", Err.Number)
        WriteLog Format1("Err.Description:{0}",Err.Description)
        WScript.Quit(1)
    end if
End Function


'-----------------------------------------------------------------
' AddKvpItems
'-----------------------------------------------------------------
Function AddKvpItems(computerSystem, itemName, itemValue)

    dim dataItem, dataItems, objInParam, objOutParams
    
    AddKvpItems = false
    
    set dataItem = objWMIService.Get("Msvm_KvpExchangeDataItem").SpawnInstance_()
    dataItem.Data = itemValue
    dataItem.Name = itemName
    dataItem.Source = 0
    
    dataItems = Array(1)
    dataItems(0) = dataItem.GetText_(1)
    
    set objInParam = managementService.Methods_("AddKvpItems").InParameters.SpawnInstance_()
    objInParam.TargetSystem = computerSystem.Path_.Path
    objInParam.dataItems = dataItems
    
    set objOutParams = managementService.ExecMethod_("AddKvpItems", objInParam)

    if objOutParams.ReturnValue = wmiStarted then
        if (WMIJobCompleted(objOutParams)) then
            AddKvpItems = true
        end if
    elseif (objOutParams.ReturnValue = wmiSuccessful) then
        AddKvpItems = true
    else
        WriteLog Format1("AddKvpItem failed with error {0}", objOutParams.ReturnValue)
    end if

End Function


'-----------------------------------------------------------------
' Handle wmi Job object
'-----------------------------------------------------------------
Function WMIJobCompleted(outParam)
    
    dim WMIJob, jobState
    WMIJobCompleted = true

    set WMIJob = objWMIService.Get(outParam.Job)
    
    jobState = WMIJob.JobState

    while jobState = JobRunning or jobState = JobStarting
        WriteLog Format1("In progress... {0}% completed.",WMIJob.PercentComplete)
        WScript.Sleep(1000)
        set WMIJob = objWMIService.Get(outParam.Job)
        jobState = WMIJob.JobState
    wend

    if (WMIJob.JobState <> JobCompleted) then
        WriteLog Format1("ErrorDescription:{0}", WMIJob.ErrorDescription)
        WriteLog Format1("ErrorCode:{0}", WMIJob.ErrorCode)
        WMIJobCompleted = false
    end if
    
End Function

'-----------------------------------------------------------------
' Create the console log files.
'-----------------------------------------------------------------
Sub WriteLog(line)
    dim fileStream
    set fileStream = fileSystem.OpenTextFile(".\AddKvpItems.log", 8, true)
    WScript.Echo line
    fileStream.WriteLine line
    fileStream.Close

End Sub


'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format2(myString, arg0, arg1)
    Format2 = Format1(myString, arg0)
    Format2 = Replace(Format2, "{1}", arg1)
End Function

'------------------------------------------------------------------------------
' The string formatting functions to avoid string concatenation.
'------------------------------------------------------------------------------
Function Format1(myString, arg0)
    Format1 = Replace(myString, "{0}", arg0)
End Function