OnSelct Barcode Scanner Property

[vsslasd]

The Barcode Scanner doesn't have an OnSelect property. 

Question: In a canvas app, we want the "Default" Value to read from a collection, allowing the user to utilize the barcode scanner to write over that value which is stored in the collection with the Barcode Scanner Value. 

The BarcodeScanner.Value does a nice job of pulling data from the barcode scanner, but we would like to push data into the text box control from the scanner e.g. using the OnSelect. 

How do we still display the existing value from the collection in the textbox control, while enabling the scanner to overwrite the value in the collection if the scanner button is clicked ? 

[cwebb365 · Accepted solution]

I do it this way. 

In the default proprety of the textbox I use this:

If(IsBlank(ScannedNew),FIIX_x0020_ID,ScannedNew)

Then next to the textbox is a camera icon with onSelect: Set(ScannedNew,ScanBarcode())

This basically says, if that variable is blank then show existing value, otherwise, overwrite it with the scanned barcode item. 

[mobaky · Accepted solution]

Hello @vsslasd,

Thanks for your questions, We've actually just implemented a new  "OnScan" property that might help with this scenario and it will be very similar to the onChange property in other controls. This should be available by the end of january.

Studio:

Mobile Player:

[vsslasd]

Thank you!

[vsslasd]

I've tried using your formula, but something is not correct. 

is it possible you can clarify ? I have a red underline under: Set(ScannedNew,ScanBarcode()).

Something is missing. 

Thank you very much.

[vsslasd]

PS - this is a canvas app. 

[mobaky]

The solution that  @cwebb365 suggested is using the barcode function but you will have to enable it from the experimental features settings.  

Text Input (Default):

Button (OnSelect):

Note that this feature will be deprecated soon but not before the property is available 🙂 

[vsslasd]

Thank you. We are trying to avoid experimental features, though. 

This is confusing, though, because this article: https://powerapps.microsoft.com/en-us/blog/new-barcode-scanner-control/

states: " Finally, this is not an experiemental control but one we feel is worthy for use in production...."

Evidently, it still is "experiemental" ?

Thank you for clarifying.

[mobaky]

Oh no what I meant is that the scanBarcode function that is used in @cwebb365 's  proposed workaround is experimental and will be deprecated soon but it could temporarily unblock you until the new property is released.

But the new Barcode scanner control is not an experimental 🙂   

[cwebb365]

Ok, so I just updated my App to the new control from the old way which I linked. 

It's still basically the same, but you do it like this. 

For the Textbox you want to update, you add a Barcode control next to it, in this case BarcodeScanner2, then in the default of the Textbox use: If(IsBlank(BarcodeScanner2.Value),FIIX_x0020_ID(Your collection field),BarcodeScanner2.Value)

This should show your collection field by default until there is a value in the barcodescanner2 which means you clicked to scan in a number, scan, then it will populate the field. Then you have a button to commit those changes.