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how to make barcode reader in vb
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follow this link

"http://www.codeproject.com/Articles/12803/Read-Barcodes-from-an-Image?rp=/KB/recipes/bcreader2of5/bcreader2of5.zip">
 
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Richard MacCutchan 23-Dec-13 10:57am    
Please make your links clickable.
Did you try searching the web before posting this question? I found at least 2 articles on CodeProject itself which might answer you:

1- This article explains the algorithm for at least one type of barcodes.

2- If you want to handle different types of barcodes in your application, chasing after the different algorithms will take you a long time and you will be better off using a library like the one in this article
 
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Maybe you should take a look at this: http://zxingnet.codeplex.com/[^]
 
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