WebListBox - Selecting Multiple Rows in Code

Hello All,

In the opening event a WebListBox among other things I have:

Me.RowSelectionType = WebListBox.RowSelectionTypes.Multiple

When I run the project I can as a user select multiple rows, therefore the RowSelectionType is honoured.

How do I programmatically select multiple (say Row @ index 1, Row @ index 3, Row @ index 9) or indeed all rows, when RowSelectionTypes is set to multiple.

SelectedRowIndex expects an Integer (singular), and there is no RowAt(?) to address it via looping.

Apologies if I missed something obvious.

Thank you.

Kind regards, Andrew