barcode implementation...

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hi....
am in need of developing an application in dotnet(vb or c#) for a shop, in that i have to sell items with the help of barcode reader and for each items i have to generate labels.. i got some resources for the barcode label generation. am not that much clear abt the whole process, so any one plz help me out in creating the labes and selling items using the barcode reader.

with
regrds n thanks

ageesh

Posted 15-Jul-10 23:16pm

Ageesh

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Christian Graus · Answer 1 · 2010-07-15T23:25:00

There's a library on this site for generating bar codes. If you've got a commercial project, you need to both be open to buying a library ( b/c if you're being paid a fair wage, the cost of a library should be less than the cost of you writing it ) and be able to do some basic searching for yourself. If no article exists, no-one is going to write the code for you, for free, when you're being paid. As it stands, it does exist, you just need to do a search of the site and you'll find it.

**JF2015** · Answer 2 · 2010-07-15T23:28:00

Hi,

you need a data base that holds a unique identification number for each product (and other data like prices). Then you need an application that creates the labels for these products. The barcode readers must then be connected to this database and can then determine which product corrsponds to the scanned barcode.

OriginalGriff · Answer 3 · 2010-07-15T23:31:00

Oh boy! Can-of-worms coming up. I assume that your products do not already come with barcodes - most do, but if you are printing your own, then you need to be careful. You cannot just use a barcode at random, they encode a number called an Article Number which must be unique to a specific packet of product. (i.e. a packet of 200g of MyCompany Digestive Biscuits needs a different code from a 300g packet of MyCompany Digestive Biscuits, and neither code can be used for any other product in the world.)

If you use a code which is in use then either your product could be misread for an existing product, or an existing product may be misread as one of yours - since the Article number is the product as far as the computer system is concerned, it will price it for the misread.

To this end, there is a national organisation in nearly all countries which issues (for a fee) each Article Number.

The other solution is to use a (more complex) barcode such as EAN128, which allows fields to be used such as a serial number. You could then tie the serial number to a product and price it accordingly.

Also be aware that there are (in most countries) legal restrictions on pricing via barcodes, which set out the order in which price changes may be made, and the (large) fines that are applied if you fail to follow them!

barcode implementation...

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