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mst1's avatar
mst1
Occasional Contributor
11 years ago

For Each not working with dotNET.system_collections.ArrayList in vbScript

Hello, I want to use an ArrayList object from the system.collections library, because of it's great member functionallities. However, when I create such an object as next , I am not able...
  • Philip_Baird's avatar
    11 years ago

    Hi Frank, I did a quick bit of research and came up with a theory


     


    CreateObject creates and returns a reference to a COM object


     


    For Each is a VBScript construct


     


    If you inspect myList when it is created using CreateObject, you can view cannot view any properties and methods


     


    If you inspect myList when it is created using dotNET.System_Collections.ArrayList.zctor, you view all properties, fields and methods


     


    My conclusion is that CreateObject and dotNET.System_Collections.ArrayList.zctor create different types of objects and the VBScript For Each construct can only operate on a COM object created by using CreateObject


     


    dotNET.System_Collections.ArrayList.zctor probably creates an instance of a .Net object in which certain operations are not available to native VB Script




    This appears to be confirmed as if you use CreateObject to create myList, myList.ToArray will fail whereas if you use dotNET.System_Collections.ArrayList.zctor it will work

     


    Regards,


    Phil Baird