How can i Use BarCode Reder in C# Application

Question

0.00/5 (No votes)

See more:

Hi i now develop A system in Using C# Language and SQLServer For Database
and this Project use Bar Code Reader and i do not know how to use barcode and how can i attach it to my project thanks For you attention .......

Posted 21-Sep-10 10:04am

Yasser El Shazly

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Steve Wellens · Answer 1 · 2010-09-21T17:46:00

Solution 1

About 15 years ago, I got the inventory crew to add barcodes to all the inventory in the company's warehouse.

The reader used didn't require any changes to my program. It connected between the keyboard and PC. The user would tab to the serial number field, press a button on the barcode reader, and the scanned serial number would be input. No code required.

Todays barcode readers probably do the same thing with USB.

Posted 21-Sep-10 17:46pm

Steve Wellens

Comments

DavidKiryazi 22-Sep-10 4:50am

Good call.

This seems to be a common practice for a lot of the POS software I have used when working in retail. You just attach a USB scanner to the PC and as long as the user has the input focused on a textbox (or other text reading control) it will work.

I am currently designing a new POS system and will be using this method. It is not necessary (from the customer's perspective) to scan in barcodes magically. The users have been using a particular software since 2000 that requires they put focus onto the sale input box and then scan the barcode. Introducing a new method now would only cause confusion, amounting to more costs in training and extra software development that is COMPLETELY unecessary.

Roger Wright · Answer 2 · 2010-09-21T19:18:00

Whether RS232 or USB, barcode readers are serial devices, and you should look to the SerialPort class for implementation details. They emit standard ASCII codes, prefixed by a start code (most often 0 or 7), a barcode consisting of characters and digits, and optionally followed by a checksum digit. The tough part about barcode readers is that there are so many different barcode formats in common use.

About 15 years ago I was directed to buy and implement barcode readers for a hardware store I worked for, and the damned things came unprogrammed, and with no explanation of the different formats, nor did I have any explanation of the format we used. Fortunately we had this brand new thingy called the Internet - literally new, as I was one of the first in the area to sign up for service in 1995 or '96 - and I still managed to find definitions on the web. It's probably a lot easier today...

In summary, implement a serial port reader in your program, find out what barcode format your company uses and search the Internet for a definition, implement a routine to strip out irrelevant characters sent by the reader, and use the text result to search your database for matching items.

These should be unique, by the way. Under a universal agreement, all barcodes consist of two parts - a vendor prefix, and a product identifier. The vendor prefix is assigned by an independent registrar to maintain uniqueness, and the product identifier is assigned by the vendor. Different packages of the same item will have different codes, as well - a 30-piece case of fluorescent light bulbs will have a different code than a single tube from the package. This is a help in shipping and receiving, as software can be easily written to receive a case of 30 as 30 individual pieces.