TextChangeEvent is not fired when i scan the barcode text in my textbox?

Question

0.00/5 (No votes)

See more:

I want to display the detail in gridview when i scan a barcode through a barcode machine which is connected through my usb.My Textchange event is not getting fired when i get the barcode text in textbox.This is what i have done so far.

<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True" ontextchanged="TextBox1_TextChanged"
>

C#

protected void TextBox1_TextChanged(object sender, EventArgs e)
{

    string voucher = TextBox1.Text;

}

Any help would be appreciated.

Posted 24-Aug-13 0:01am

Amit Karyekar

Updated 24-Aug-13 7:08am

v3

Add a Solution

1 solution

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)

Dave Kreskowiak · Answer 1 · 2013-08-24T03:40:00

Solution 1

You don't "trigger" an event. You simply show the scanner the barcode and it does the work.

Depending on the interface your barcode scanner is exposed on, probably as a serial port, you end up reading the barcode from the interface and do whatever you need to do with the data.

Consult the documentation on the barcode scanner to see how it's exposed to your code.

Posted 24-Aug-13 3:40am

Dave Kreskowiak

Comments

Amit Karyekar 24-Aug-13 12:39pm

i wanted to know how to get the barcode text in textbox when i scan it?

Dave Kreskowiak 24-Aug-13 13:35pm

That depends ENTIRELY on the interface your barcode scanner exposes itself on. Consult the documentation on the scanner to find out what that is.

It can be either a "keyboard wedge", or on a COM port (serial), or there are even scanners that work on Ethernet.

Amit Karyekar 24-Aug-13 22:48pm

Till now i am getting the text of the scanned barcode in the textbox.Now the problem is that textchange event doesnt get fired after textbox is filled.I have to press enter for the event to be fired.

Dave Kreskowiak 25-Aug-13 9:48am

That would be because you didn't configure the barcode scanner to hit [ENTER]. Usually, there are configuration options you can give the scanner to tell it to prepend to the beginning and/or append to the end of the barcode any sequence of characters you want, including [ENTER].

Dave Kreskowiak 25-Aug-13 9:49am

Again, READ the documentation on the scanner! It would have told you this!

Amit Karyekar 27-Aug-13 21:57pm

Thanks it worked !!!!