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How to Modify or Update an Instance

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After you have retrieved an instance, you can modify your local copy and update your changes to the server.

To modify or update an instance

  1. Retrieve a local copy of the object with a call to GetObject.

  2. If necessary, view the properties of the object with a call to the Properties_ method.

    Although not required, you may want to know the value of the property before you change it.

  3. Make any changes to the object properties with a call to the SWbemProperty.Value method.

    The Value method changes only the local copy. To save your changes to WMI, you must put the complete copy back in the WMI repository.

  4. Put the object back in the WMI repository with a call to the SWbemObject.Put_ or SWbemObject.PutAsync_ methods.

    As the names imply, Put_ updates synchronously while PutAsync_ updates asynchronously. Either method copies over the original instance with your modified instance. However, to take advantage of asynchronous processing, you must create a SWbemSink object.

    The following example shows how to update an instance:

        Set ObjClass  = Namespace.Get("MsSna_LinkService_IpDlc")     
' Create new link service instance  
    Set NewInst   = ObjClass.SpawnInstance_  
    ' Set instance properties  
    NewInst.NetworkName = Left(strComputerName, 8)  
    NewInst.CPName = "IPDLCLS"  
    NewInst.NodeID = "05D.FFFFF"  
    NewInst.AddressType = 2  
    NewInst.LocalAddress = Trim(strLocalAddress)  
    NewInst.LENNode = strLenNode  
    NewInst.PrimaryNNS = strPrimaryNNS  
    if (strBackupNNS <> Empty) then  
        NewInst.BackupNNS = strBackupNNS  
    end if  
    ' Commit the instance  
    NewInst.Put_