C# UPC-A Generator Library SDK
Integration & Developer Guide for UPC-A linear barcode image generation in C#
Generate barcode UPC-A images in Visual C# .NET with complete sample C# source cod
In this tutorial, you learn how to generate, print UPC-A barcode images in .NET using C#.
How to create UPC-A barcodes in ASP.NET, Windows app using C#
C# UPC-A Generator Introduction
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UPC-A, also known as Universal Product Code version A , UPC Code, UPC Symbol, GTIN-12, GS1-12, UCC-12, is the most common and well-known barcode symbology in the United States.
C# UPC-A Generator is one of the functions in OnBarcode's
Barcode for .NET Generation Controls, which supports generating & printing UPC-A and 20+ other linear & 2D bar codes for C# applications.
OnBarcode C# Barcode Generator makes it easy to generate, create UPC-A and other linear & 2d barcodes in Microsoft Word. Here are some detailed tutorials for C# UPC-A generation and data encoding, size & image setting.
UPC-A Generator library, SDK & application
OnBarcode provides several
UPC-A Generator components and software, including
.NET UPC-A,
Java UPC-A,
VB.NET UPC-A,
ASP.NET UPC-A,
UPC-A Generator.
This document is providing a detailed C# source code about generating UPC-A barcodes in C# class using
C# Barcode generation component. Complete UPC-A custmoization settings is included in
C# UPC-A generation guide.
How to calculate UPC-A check digit using C#?
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Barcode UPC-A checksum digit is based on a module 10 calculation,
based on the weighted sum of the values of each of the digits in the UPC number system, menufacturer code, and product code.
The steps below explain how to calculate UPC-A checksum digit.
- Consider the right-most digit of the message to be in an "odd" position, and assign odd/even to each character moving from right to left.
- Sum the digits in all odd positions, and multiply the result by 3.
- Sum the digits in all even positions.
- Sum the totals calculated in steps 2 and 3.
- The check digit is the number which, when added to the totals calculated in step 4, result in a number evenly divisible by 10.
- If the sum calculated in step 4 is evenly disivisible by 10, the check digit is "0" (not 10).
For example, UPC-A barcode data is "12345678901", and its correct check digit sum is "2".
| 1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
0 |
1 |
| Step 1 |
odd |
even |
odd |
even |
odd |
even |
odd |
even |
odd |
even |
odd |
| Step 2 & 3 |
3 |
2 |
9 |
4 |
15 |
6 |
21 |
8 |
27 |
0 |
3 |
| Step 4 |
Total is 98 |
| Step 5 |
The next number of 98 is 100, which will be evenly divisible by 10. |
| Step 5 |
So the check digit is 2. (100-98=2) |
Create UPC-A Barcodes in C#
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More C# Barcode Generation Tutorials for Each Barcode
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Barcode Control for C#.NET - Bar Code Type Generation
