Power Platform Community Forum Thread Details

Hello all!

I was doing some testing with the updated modern controls and noticed what seems like a significant issue. When unchecking an item in the updated combobox, the OnChange action is triggered, but the associated record is incorrect.

For example, if you were perhaps adding items to a local collection as they are selected from the combobox, if you then uncheck a a previously selected item, there is no way to identify (and then remove) that item from the collection. It appears that (for example) Self.Selected.ID ends up referring to the last item that was checked and not the item that was just unchecked.

On a related note, there is no way to distinguish the OnChange trigger from checking/unchecking items and the clear items ("X"). You can work around this however if (as in my example) you wanted to clear the entire collection if the "X" is selected, by using something like this:

If(IsBlank(First(Combobox1.SelectedItems).ID), Clear(colComboBoxItems))

Categories:

Connector development

Hello @SteveAtTCH,

This is a known limitation with the modern or classic ComboBox control. However, there is currently no property exposed that tells you which specific item was unchecked.

When an item is unchecked, OnChange fires, but Self.Selected does not reference the item that was just removed. It typically points to the last selected item, which makes it impossible to directly identify which record was unchecked.

Currently, there isn’t a property that tells us whether the change was an add, remove, or clear action. Because of that, any required logic has to be written inside the OnChange property

On Change Property - you can try below code:

If(
    IsEmpty(Combobox1.SelectedItems),
    Clear(colComboBoxItems),
    ClearCollect(
        colComboBoxItems,
        Combobox1.SelectedItems
    )
)

If this response resolves your issue, please mark it as the Verified Answer so it can help other community members as well.

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