How to generate bar code for an input from keyboard and read it back in ASP.NET 2002

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What is sample code to generate bar codes for a string input by client into web form's text box and display it on the same web page and also to save it into SQL Server 2005 database and read the same back from database or from printed bar code through a bar code reader using ASP.NET + VB.NET?

satish v itagi

Posted 11-Feb-10 5:41am

itagi

Updated 11-Feb-10 6:02am

Sean Ewington

v2

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Rod Kemp · Answer 1 · 2010-02-11T15:30:00

First up, what type of bar code are you talking about, a simple 3of9 or the more complex 2D bar codes also how does your bar code reader connect to the computer via the PS2 keyboard port or USB, does it have specific drivers and will those drivers interact with a browser.

When you store a bar code you do not store the image that you see but the alphanumeric characters that make up the bar code, so if you have a bar code that corresponds to ABC1234 then that is what is stored and retrieved from the database.
As for displaying the bar code if you are using the 3of9 bar code then you could use a free 3of9 bar code font[^] installed on the web server and the Graphics DrawString function to create an image of the text, which you can then display on a web page.