ListBox missing method for select multi items

rgb

When selection are "Multiple"
I can't select by example item 1,3,5

missing method like:

ListBox.Select(row As Integer,optional AddToSelection As Boolean = False)

ListBox1.Select(1) # same ListBox1. SelectedRowIndex = 1
ListBox1.Select(3,true) # items selection are 1,3

ListBox1.GetSelection() As Integer() # return arrays of all selected items

Garry

Thanks for the suggestion. This exposed a genuine gap in the ListBox API. I’ve implemented programmatic multi-selection for the next Objo Studio release, using slightly more explicit row-based names:

ListBox1.SelectionMode = "Multiple"

ListBox1.SelectRow(1)
ListBox1.SelectRow(3, True)
ListBox1.SelectRow(5, True)

Var selectedRows As Array(Of Integer) = ListBox1.SelectedRowIndexes

SelectRow(index) replaces the current selection. Passing True as the second argument adds the row to the existing selection:

ListBox1.SelectRow(3, True)

You can also deselect an individual row:

ListBox1.DeselectRow(3)

SelectedRowIndexes returns all selected row indexes in display order. The existing SelectedRowCount and SelectedRowIndex(n) APIs remain available for compatibility.

Invalid indexes, selecting an already-selected row, and deselecting an unselected row are harmless no-ops and do not fire SelectionChanged.

https://feedback.objo.dev/feature/1180