!IsBlank not working as expected with Button DisplayMode

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Posted on by ebelanger

Hi Folks,

I fairly new with PowerApps and looking for some help with a button DisplayMode logic.

I have several fields that are required to be filled out on a form in order for the button to be enabled to submit.

If(!IsBlank(DeviceManufacturerValue) && !IsBlank(DeviceModel_Value) && !IsBlank(MemorySize_Value) && !IsBlank(Justification_Value) && !IsBlank(PhoneCost_Value),DisplayMode.Edit, DisplayMode.Disabled)

This all appear to working fine at first glance and once all required fields are populated the button goes to edit mode but if I remove the value selected from DeviceManufacturer, which is a drop down selectable field, I would expect the button to be grayed out but that is not the case. I'm getting the same problem with a person field which does a lookup.

Can anyone please tell me how I can fix this behavior? If someone removes the selection, my button should be grayed out until a new selection is made.

Thank you.

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PriyankaGeethik 3,320 Super User 2024 Season 1 on at

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Hi @ebelanger ,

In the formula are you using variables or Control name.

I would suggest you to use control name

eg IsBlank(dropdownName.Selected.xxxx)

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ebelanger 25 on at

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@PriyankaGeethik , I'm pretty sure I'm not using variables. Let me try the format you suggested.

Thank you.

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ebelanger 25 on at

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@PriyankaGeethik , I ended modifying the formula to use IsEmpty with the dropdown fields and that works perfectly.

If(!IsEmpty(DeviceManufacturerValue.SelectedItems.Value) && !IsBlank(DeviceModel_Value) && !IsEmpty(MemorySize_Value.SelectedItems.Value) && !IsBlank(Justification_Value) && !IsBlank(PhoneCost_Value),DisplayMode.Edit, DisplayMode.Disabled)

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