My ListBox is set to SelectionMode=MultiSimple. It starts life with nothing selected, and nothing highlighted. If I then select an entry (other than the top-most one), it selects the item, and highlights it. If I then select the same entry again, it de-selects it, and the SelectedXxxx values all indicate that nothing is selected, but the topmost line is now highlighted in error. What is going wrong, and how do I fix it? Thanks
ListBox with nothing selected shows highlighted entry
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The first item in a list box or dropdown combo box is ID 0. You should set the list box selection index to -1 to make sure nothing is selected or highlighted. Setting it to 0 sets the list box (or comb box) to select the first item.