Barcode Activities

Thank you for the suggestion. I quickly tested their nupkg (it works!) but it seems the user needs to purchase a license. I'll pass the information on to our partner team.

Hi Dave,

It doesn't sound like you are doing anything wrong: as you can confirm on ZXing's website, the library should be able to process CODE_128.

https://zxing.github.io/zxing/apidocs/com/google/zxing/BarcodeFormat.html

One known limitation that comes up often is that ZXing is not very good at handling images with limited resolution.

I have been looking around for other libraries that might give better results, but not many are .Net native, so the search continues.

Hi,

Since this is a library project, I don't have an easy way to publish a single library that targets both .Net Framework and .Net 5

I have a test build for you to try though if you would like. Please reach out on the forum's Marketplace category: https://forum.uipath.com/c/build/marketplace/81 (my handle is @qbrandon)

Indeed, the underlying ZXing library does not appear to support Codablock.

Please find the enum of supported formats here: https://zxing.github.io/zxing/apidocs/com/google/zxing/BarcodeFormat.html

I would be interested to know which industry/use case this need is coming from, if you care to share that information. I have received some feedback about poor performance of ZXing in handling low resolution images and it might be good to look into more barcode / QR code libraries as dependencies.

Hello, I just tested a bunch of Code39 barcodes from wikipedia and this page, and all seem to be decoded just fine.

Could you share a sample barcode image that does not work?

Please reach out on the forum's Marketplace category if you would like to start a discussion thread: https://forum.uipath.com/c/build/marketplace/81

Format is an (optional) output argument, so that should not be necessary (and if you set it, it needs to be a variable, not a value)

Sometimes, you may get an empty output when the library was not able to pick up the barcode (it could be because of image quality issues)

Can you please pick up a couple of sample barcode searching online and try them out to figure out if the issue could be with the input?

Hello,

You are probably missing a nuget feed that offers ZXing.Net. I would suggest adding the nuget.org feed in the Sources of your Package Manager: https://api.nuget.org/v3/index.json

It would depend on the structure of the text, but most of the time you can use string manipulation to parse it according to your needs.

This is beyond the scope of the barcode activities, but how about creating a thread on our forum to get the support of the community in how to deal with string manipulation? (my tag is @qbrandon)

I did a quick test with a sample invoice featuring a QR Code:

1. "Export PDF Page as Image" from the UiPath.PDF.Activities package to convert the specific PDF page to PNG

2. "Load Image" to load the PNG

3. "Decode Image" to read the code

I have to admit, I have not tested what happens when there are more than 1 barcode in the page though, I guess you might need to manipulate the image object to extract specific areas of the page.