Popup appearing when no case is selected from Combobox

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Posted on by dbbbb

Hello!

I have created a popup that should appear when the user selects something from a Combobox.

My issue is that the popup also appears randomly when there was no change in Combobox, on opening a screen.

My Combobox' OnChange property is:

OnChange = Set(varShowPopup, true)

Any help will be greatly appreciated.

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WarrenBelz 156,454 Most Valuable Professional on at

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Hi @dbbbb ,

The issue is that a Combo Box triggers its OnChange event whenever a screen is opened containing the form it is in - the easiest way to see if it is actually changed is to compare its present content with the value in the underlying field so OnChange (assuming a Choice/LookUp column here) and only trigger if they do not match

If( Self.Selected.Value <> ThisItem.YourFieldName.Value, DoYourActionHere )

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dbbbb 44 on at

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Hi @WarrenBelz, thanks for a prompt reply.
Should I apply this syntax into the Combobox's OnChange property or elsewhere? Not sure if I got you correctly.

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slima1 69 on at

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It sounds like the issue might be that the OnChange property of the ComboBox is being triggered even when there is no change in its value. This could be happening if the ComboBox is being loaded with a default value that matches its initial value.
To fix this, you can try using the OnSelect property of the ComboBox instead of OnChange. The OnSelect property is only triggered when the ComboBox is actually selected by the user, and not when it is loaded with a default value.

Here's an example of how you can modify the ComboBox's OnSelect property:

Add a variable to the app to keep track of the previous value of the ComboBox:
Set(varPreviousValue, cmbComboBox.Selected.Value)
Modify the OnSelect property of the ComboBox to check if the value has changed before setting the varShowPopup variable:
If(cmbComboBox.Selected.Value <> varPreviousValue, Set(varShowPopup, true))

This code will only set the varShowPopup variable to true if the selected value of the ComboBox is different from the previous value. This should prevent the popup from appearing randomly when there is no change in the ComboBox.

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WarrenBelz 156,454 Most Valuable Professional on at

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Hi @dbbbb ,

Yes - just add your existing code where I have DoYourActionHere.

@slima1 , we appreciate solutions from the experience of users, but ChatGPT is available to everyone and regularly simply confuses the matter with misleading answers

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dbbbb 44 on at

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Hi @WarrenBelz

The following code does not work (OnChange property of Combobox)

If(
Self.Selected.Value <> MyComboBox.Value,
Set(varShowPopup, true)
)

P.S. My combobox chooses in its Items property Office365Users function if this is of any importance.

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WarrenBelz 156,454 Most Valuable Professional on at

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Hi @dbbbb ,

You need the Field name it is displaying (I assume it is in a Form), not the Combo Box name - you actually just use (with actual field name and assuming this is a Choice or Lookup field)

Set( varShowPopup, Self.Selected.Value <> ThisItem.YourFieldName.Value )

Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. If the content was useful in other ways, please consider giving it Thumbs Up.

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dbbbb 44 on at

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@WarrenBelz in this case the field changes only if the user applies the change by clicking on a button.

What I'm trying to achieve is to display a popup when the user is playing with the combobox (without applying changes and overwriting a field in a SharePoint column)

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