Barcode font size 30 and below not read by the scanner

Question

2.33/5 (2 votes)

See more:

Hello Mentors,

g.DrawString(codes1, new Font("Free 3 of 9",30), Brushes.Black, new RectangleF(0, 13, 500, 50), strFormat);

In the above mentioned line size 30 which is the size of barcode i'm using does not read by the scanner when i give 35 and above size the scanner can read within a secs, rest of my code are working properly. Is there anything missing in this line.

Thanks in Advance

Posted 4-Nov-13 19:36pm

NairPramod

Add a Solution

2 solutions

Solution 2

While Marc has a good point, you should also consider getting yourself a professional bar code printer like one from Zebra[^]

These printers have their own API for printing bar codes that ensures crisp and clear output.

Best regards
Espen Harlinn

Posted 5-Nov-13 11:16am

Espen Harlinn

Comments

Marc Gabrie 6-Nov-13 12:53pm

Totally agree with you Espen but problem is that maybe he needs to target common printers like laser or inkjet and that's (maybe) why he's using System.Drawing.Graphics class
Regards,

Espen Harlinn 6-Nov-13 15:31pm

Which is why I mentioned that you have a good point :-)
Now, with regular laser or inkjet priners you sometimes run into problems with anti-aliasing, and every once in a while you print out a barcode that can't be read back by the scanner. A professional barcode printer reduces that problem significantly, and for many applications an unreadable barcode every once in a while isn't that much of a problem - but when it is, you need to use a real barcode printer.

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)

Marc Gabrie · Accepted Answer · 2013-11-05T04:05:00

Many years of experience dealing with barcodes showed me that fonts are not a reliable solution. Instead, go for a graphic barcode algorithm that natively renders them on your dev platform i.e. in your case .NET

I suggest you to rid of your barcode-font-based code and move to a graphic approach. Here is some resources:

Barcode Image Generation Library[^] (free)
http://barcoderender.codeplex.com/[^] (free)
How to print images, pictures, texts and high quality barcodes using VB.NET or C#[^] (commercial)
http://www.idautomation.com/barcode-components/windows-forms-control/user-manual.html[^] (commercial)