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Reset Barcode Reader

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Posted on by ulvgyov7ntiefmy

We've been using the previous Barcode Scanner to add items to our form and when we submit the form it would save and reset the barcode scanner value. Since the introduction of the new Barcode Reader I can't work out a way to do this so any help would be appreciated.

Under the old integration there is no code added to the Barcode Scanner button, I just amended the field in the form to be If(IsEmpty(DataCardValue56), btn_SP_ScanIMEI.Value, Parent.Default) and the confirm button was SubmitForm('frm.SPEdit'); Back(); Reset(btn_SP_ScanIMEI)

Now I have to use First(btn_SP_ScanIMEI.Barcodes).Value in place of the btn_SP_ScanIMEI.Value in the first part but when it comes to saving the form the Reset doesn't work and I can't think of what code to use for it.

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LaurensM 12,516 Moderator on at

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Hi @ulvgyov7ntiefmy,

With the new Barcode Reader control simply resetting the .Barcodes output does not seem to be possible - it overwrites the previous output after a new scan has taken place. A quick and easy workaround would be saving the scanned data in a variable via the OnScan property and referencing that variable instead. After submitting you would just clear the variable and start fresh. (Should you want multiple scans, use a collection instead of a variable)

The OnScan property would be:

UpdateContext({varScannedItem: First(Self.Barcodes)})

The Submit button (or OnSuccess of the form) will reset the variable:

UpdateContext({varScannedItem:Blank()})

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

Thanks!

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Jap11 386 on at

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Hi @LaurensM - Ive been stuck trying to work this out as well. I've used the OnScan property and OnSuccess you have recommend but think I'm missing a step...

How do I reference the scanned variable in my text box? When I scan an item, I need it to display in this text box, and then when I submit the form, the text box resets.

Any help would be massively appreciated 🙂

Thanks,
Josh

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Jean-Philippevb 84 on at

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Hi Josh

you could do this in several ways: the barcode reader will return a table with several records and Fields "Type" and "Value". if you would like a specific barcode to be returned you could do it
- in the "on scan" property of the barcode reader like this: UpdateContext({VarScannedItem : First(Self.Barcodes).Value})
- Or you follow LaurensM advice, and in the textbox you use VarScannedItem.Value

Kind Regards,

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nmagee 25 on at

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Yes, but how does the variable get reset when you navigate back to the barcode scanner screen?

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