Question

I’m using Excel 2010 and I have a macro that needs to load OData results into an in-memory array. The only part I’m missing is how to actually create that array in Excel.

How do I create a multi-dimensional array (or an array of a class) in
Excel 2010?

The only constraint I have is that anything I build must be self contained in the XLSX. So that means dependencies on PowerPivot, addins, etc, are out. I think that leaves me with just VBScript macros.

I’ve searched MSDN, StackOverflow, and Google for hours and can’t find a clear-cut example of how to do this.

Answer 1

As an extension to @Jeremy ‘s answer:

you CAN redim multi dimensional arrays.

DIM arr() as Variant 'or object or class or whatever.  
Redim arr(1 To 1, 1 To 1) 'works 
Redim arr(1 To 3, 1 To 3) 'works, but deletes any existing data
Redim Preserve arr(1 To 3, 1 To 10) 'works and keeps any data
Redim Preserve arr(1 To 10, 1 To 10) 'fails, you can only redm preserve the last dimension

Whether Arrays, Collections (or Dictionaries for that matter) are best for your app depends on the details of your application