barcode

I need a C# .NET function to evaluate whether a typed or scanned barcode is a valid Global Trade Item Number (UPC or EAN). The last digit of a bar code number is a computer Check Digit which makes sure the bar code is correctly composed. GTIN Check Digit Calculator public static bool IsValidGtin(string code) { if (code != (new Regex("[^0-9]")).Replace(code, "")) { // is not numeric return false; } // pad with zeros to lengthen to 14 digits switch (code.Length) { case 8: code = "000000" + code; break; case 12: code = "00" + code; break; case 13: code = "0" + code; break; case 14: break; default

I skimmed through their documentation and found it a bit overwhelming at first. I know you can search for items by entering a UPC (the number below a 1D barcode), but I couldn't find a word about it in the API. What I want to do is perform a product lookup by doing a UPC search after scanning a barcode. quickcel Here is a page from the e-commerce service docs which shows how you can use the ItemLookup method to find a specific product by UPC. Note that default IdType for the ItemLookup is ASIN, but you can change it to something else like UPC if you need to Matthias K. Be carefull if you want

I'm trying to use the barbecue barcode printing library. I have successfully added the library to IntelliJ through project structure add library. Then I imported the packages and wrote the methods, which gave me no error. The packages were available in the class. But when I compile it gives me the error: error: package net.sourceforge.barbecue does not exist How can this be? I'm coding in ubuntu, is there any other place to which I have to add the library? Thanks. Tika I tried to "Maven > Reimport" but the only thing that actually fixed it was to close the project, delete the .idea directory,

I want my application to recognize barcodes taken by camera. Is it possible using Android SDK? Something like this: Barcode Scanner schwiz It's not built into the SDK, but you can use the Zxing library . It's free, open source, and Apache-licensed. The 2016 recommendation is to use the Barcode API , which also works offline. Samuel Urbanowicz 2016 update With the latest release of Google Play Services, v7.8, you have access to the new Mobile Vision API. That's probably the most convenient way to implement barcode scanning now, and it also works offline . From the Android Barcode API : The

Looking for free/opensource code or description of algorithms to code (simple) and decode (hard) the 2D barcode QR code . It doesn't seem like a trivial problem, but it's so popular in Japan that there must be something already available... I have a colleague who worked on ZXing ("Zebra Crossing"). That's got a fair variety of platform support. Dungeon Hunter QR Code Demystified - Part 1 QR Code Demystified - Part 2 QR Code Demystified - Part 3 QR Code Demystified - Part 4 QR Code Demystified - Part 5 QR Code Demystified - Part 6 and http://www.thonky.com/qr-code-tutorial/introduction/ To know

I have a Java swing application, so I have a simple Text box with KeyListener and I have a barcode reader (USB), when the barcode reader write the number on this textbox, I chek the code and I process it. But I have the problem the code can have from 4 to 13 digits. So I have this code public class KeyListenerCodice implements KeyListener{ public void keyPressed(KeyEvent click) { } public void keyReleased(KeyEvent keyEvent) { printIt("Released", keyEvent); } public void keyTyped(KeyEvent keyEvent) { printIt("Typed", keyEvent); } private void printIt(String title, KeyEvent keyEvent) { if

When a barcode is scanned on form1, I make a call to database to get the item for this barcode and open form2 with pre-populated data. If I use text changed event then it makes as many times as numbers in one barcode. I cannot check length of the barcode as it may be different each time. which event I should use to make only one call when Barcode is scanned? I tried TextChanged, KeyPress, KeyDown events but they all are being called multiple times. private void txt_Barcode_TextChanged(object sender, EventArgs e) { con.Open(); GenerateInvoice gn = new GenerateInvoice(); string query = "SELECT *

I have a small program that read barcodes from /dev/input/event4. This is the code: #include <sys/file.h> #include <stdio.h> #include <string.h> #include <linux/input.h> int main (int argc, char *argv[]) { struct input_event ev; int fd, rd; //Open Device if ((fd = open ("/dev/input/event4", O_RDONLY|O_NONBLOCK)) == -1){ printf ("not a vaild device.\n"); return -1; } while (1){ memset((void*)&ev, 0, sizeof(ev)); rd = read (fd, (void*)&ev, sizeof(ev)); if (rd <= 0){ printf ("rd: %d\n", rd); sleep(1); } if(rd>0 && ev.value==0 && ev.type==1){ printf("type: %d, code: %d, value: %d, rd: %d\n", ev