When combobox is empty set lookup labels to empty

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Posted on by Dorinda

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I have a screen that has a Combobox that looks up different people in AD

When nothing is selected I do not want anything showing up in the three labels below the combobox which are lookups

Upper(LookUp(mapPins,cmb_Employee.Selected.DisplayName='Current Occupant'.DisplayName).Building)

How can I clear out that information if the Combobox is empty?

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Building Power Apps

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RandyHayes 76,297 Super User 2024 Season 1 on at

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@Dorinda

It's already going to be blank! If there is nothing selected in the combobox, then the Lookup is going to return nothing...and thus the label will be blank.

Are you seeing something different?

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Dorinda 1,512 on at

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@RandyHayes but as you can see there is data in those labels in orange so it is not clearing.

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RandyHayes 76,297 Super User 2024 Season 1 on at

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@Dorinda

I see that there is something there...but there should not be! Scrutinize your formula by placing your cursor at various points in it to determine where it is getting a value.

First, switch your formula to be more correct to:

Upper(LookUp(mapPins,'Current Occupant'.DisplayName = cmb_Employee.Selected.DisplayName, Building)

Then, for example, highlight the part in red below in your formula editor...the editor should tell you that it is blank if there is in fact nothing selected.

Upper(LookUp(mapPins,'Current Occupant'.DisplayName = cmb_Employee.Selected.DisplayName, Building)

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Dorinda 1,512 on at

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I havent selected anything yet something is still being selected

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Dorinda 1,512 on at

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Ok I have it working now with a bit of a difference then what you sent @RandyHayes

If(supervisor,Upper(LookUp(mapPins,cmb_Employee.Selected.DisplayName='Current Occupant'.DisplayName).Building),Blank())

Created a variable onVisible of the screen

UpdateContext({ enabled: false, visible: false, supervisor: false })

Everything works as expected.

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