Validate dropdown/combobox is not blank

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Posted on by Gargoolgala

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I am attempting to check if a dropdown box has an option selected but cannot find the syntax.

My test is to simply update the context of a label to true/false but Icannot work it out

I am placing this on the OnChange event of the dropdown.

If(IsBlank(SelectedRegion.Selected),UpdateContext({Test:true}),UpdateContext({Test:false}))

I also tried SelectedRegion.Selected.Value and SelectedRegion.Selected.Value=""

Does IsBlank work with dropdows? I have tried IsEmpty also.

I need this for comboboxes with multiple choices also - Iassume once I get it right I will simply need to change from Selected to SelectedItems for a multiple choice option.

Any assistance is appreciated.

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Building Power Apps

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Gargoolgala 270 on at

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I beleive I have this sorted out.

IsBlank does not work - IsEmpty does work.
If(IsEmpty(dcvServerOS.SelectedItems.Value),UpdateContext({Test:true}),UpdateContext({Test:false}))

The problem was more me - I was used to a dropdown single select as using .Selected instead of .SelectedItems - I think this is a legacy from before the new combo box which is more generic now and allows for multi-select.

I removed the older dropdown and brought in a newer combobox and it worked.

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AiCrEn 14 on at

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Hello,

i found a good code :

IsBlank(dcvServerOS.Selected.name_of_your_data_column)

Best regards

JP

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