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Power Apps Barcode Scanner - set length validation?

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Posted on by Emanuel_Orzan1

Hi everyone,

I build a Power App from a Share Point List, I have 3 columns that can be scanned, so in the Share Point List I add data validation for the length of the code, but seem that in the Power App when I add the Barcode Scanner the data validation doesn't work properly... in other words, I set a limit of 4 digit in Share Point List (Barcode code is a 4 digit code) , and what the Barcode Scanner is doing is that if I scan a 10 digit code, it's populating just the fist 4 digit of the 10, but I don't want him to cut the length and scan just 4 digit, I want to give a error if length is not proper (wrong code is scanned). Any idea if this is possible?

Any help is really appreciated.

Many thanks,

Emanuel

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WarrenBelz 153,034 Most Valuable Professional on at

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Hi @Emanuel_Orzan1 ,

It is doing exactly as it is designed - if you want to stop anything more than 4 characters being scanned, put this on the OnScan

If( Len(Self.Value)>4, Notify("Only 4 characters allowed",Error); Reset(Self), . . . YourPresentCodeHere )

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Emanuel_Orzan1 5 on at

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Thank you very much, it work perfect! 🍻

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BMWPilot 5 on at

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@WarrenBelz
I am trying to do this as well, just looking for an exact number of characters. Whenever I am putting in the "Len(self.value)..." I get the 'value' is unacceptable. I also tried to do the "Len(BarcodeReader1.Barcodes)... and still get the "Invalid schema". Any help would be appreciated.

On Scan.png

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WarrenBelz 153,034 Most Valuable Professional on at

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Hi @BMWPilot ,

This is a different (new) control to the one in the earlier post - you should need

Len(First(BarcodeReader1.Barcodes).Value)

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