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Multi-select drop down control OnChange property is not working as expected

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Posted on by JayneButton

116

I’m setting a variable in the OnChange property of a multiselect dropdown control in my gallery to:

Set(NeedsSaved, true)

The DisplayMode of my SAVE button is set to:

If(NeedsSaved, DisplayMode.Disabled, DisplayMode.Edit)

I’m expecting the SAVE button to be disabled ONLY when the values in the multi-select drop down control are changed, however for some reason the SAVE button is always disabled.

If I clear the OnChange property of the multiselect dropdown the SAVE button is no longer disabled.

The variable is working as expected for single select dropdowns but not for this multiselect dropdown.

Hoping someone can help!

Thank you,

Jayne

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Building Power Apps

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LaurensM 12,516 Moderator on at

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Hi @JayneButton,

The OnChange also runs when e.g. prefilling the combobox via the DefaultSelectedItems property. One approach you could take is looking for a difference in value between your current selection and default value:

//OnChange property If( //Change <DefaultSelectedItemsCode> to the corresponding code used to fetch the default values //Change Value to another column name - if required Concat(Self.SelectedItems, Value, ",") <> Concat(<DefaultSelectedItemsCode>, Value, ","), Set(NeedsSaved, true) )

Another approach documented here, involves the OnSelect property to set an initial variable to true (indicating that the user selected the control).

If this solves your question, would you be so kind as to accept it as a solution & give it a thumbs up.

Thanks!
JayneButton 116 on at

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Hi @LaurensM

Problem solved. Thanks very much for the help.

Jayne

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