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Editorial Team
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Asked: 2026-06-04T14:10:36+00:00

I have to read a 2D barcode that’s encoded with base256. When I scan

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I have to read a 2D barcode that’s encoded with base256. When I scan the barcode, it sends different characters as it comes from the keyboard and it changes the focus, turns visual studio in full screen, give the command to send to printer from notepad++.

I guess it reads ALT + TAB, CTRL + P, ALT + SHIFT, etc. and i can’t capture all the bytes from the barcode.

I tried to capture the event on textbox KeyPress method with e.handled = True and e.keyChar added to the bytes()

On form.load I set:

Me.KeyPreview = True

And tried also on form.KeyDown with no luck.

Can anyone help me on this issue?
Thank you for your time.

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1 Answer

  1. Editorial Team

    To get this done, I had to change the interface of the barcode reader to R232 and emulate a com port.

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