Introduction of UPC-A RDLC Report Barcode Generator
Top
UPC-A barcode control library SDK for RDLC local report supports barcode generation and creation in RDLC local report as images with flexible barcode property settings. Users are flexible to customize every aspect of the generated UPC-A barcode including size, rotation, resolution, and color to required one.
OnBarcode.com provides not only UPC-A Barcode Library for .NET RDLC Local Report, but also other linear and 2D barcode controls for RDLC.
We provide detailed online tutorial:
How to create, print barcodes in RDLC reports?
How to Generate UPC-A in .NET RDLC Local Report Barcode SDK
Top
This guide simplifies creating and integrating UPC-A barcodes into RDLC Local Reports using C#, optimized for ASP.NET (ASP.NET Framework, MVC) and WinForms (.NET Framework) projects with the ReportViewer Control.
OnBarcode provides step-by-step tutorials about print barcode in RDLC report in C# ASP.NET, Windows Forms application.
In the above tutorials, you are able to create and print Code 128 barcodes in RDLC reports. Here we will update the demo codes to print UPC-A barcodes in RDLC report files (.rdlc)
Open file
Open file
Form1.cs in the Visual Studio
- Change barcode type from
BarcodeType.CODE128toBarcodeType.UPCA. - Make sure the UPC-A data is 11 or 12 digits.
barcode.Type = BarcodeType.UPCA;
Customizing UPC-A Barcodes for RDLC in ASP.NET/WinForms (C#)
Top
The OnBarcode C# Barcode Generator library enables granular customization of UPC-A barcodes for RDLC reports using these key properties (optimized for ASP.NET/WinForms integration):
ShowQuietZoneIndicator: Show/hide UPC quiet zone indicator (default = true)UPCEANLeadDigitSpace: Space between first digit and start character bar (default = 0)UPCEANTrailDigitSpace: Space between stop character bar and quiet zone indicator (default = 0)UPCEANLeadTrailDigitSizeRatio: Font size ratio of first/last digits vs. other digits (default = 1.0f)UPCEANLeadDigitYShift/UPCEANTrailDigitYShift: Vertical offset of first/last digits (adjusts position in RDLC)
Customize UPC-A Quiet Zone Indicator for RDLC
You can show or hide the UPC-A quiet zone indicator in the RDLC reports.
barcode.ShowQuietZoneIndicator = false;
Note: Test the setting to ensure it does not overlap with other RDLC report items (e.g. Textbox, Line).
Customize UPC-A Digit Position/Font Size for RDLC
You can adjust UPC-A text label digit spacing / position to align with UPC-A barcode symbology in RDLC Header/Footer or Table elements.
TextFont: Specify the UPC-A text font family, font size. GS1 recommends "OCR" font.ShowQuietZoneIndicator: Show/hide UPC quiet zone indicator (default = true)UPCEANLeadDigitSpace: Space between first digit and start character bar (default = 0)UPCEANTrailDigitSpace: Space between stop character bar and quiet zone indicator (default = 0)UPCEANLeadTrailDigitSizeRatio: Font size ratio of first/last digits vs. other digits (default = 1.0f)UPCEANLeadDigitYShift/UPCEANTrailDigitYShift: Vertical offset of first/last digits (adjusts position in RDLC)
barcode.TextFont = new Font("OCR-B", 16f, FontStyle.Regular); barcode.UPCEANLeadDigitSpace = 10; barcode.UPCEANTrailDigitSpace = 10; barcode.UPCEANLeadTrailDigitSizeRatio = 0.6f; barcode.UPCEANLeadDigitYShift = -20; barcode.UPCEANTrailDigitYShift = -20;
Note:
Preview or print the RDLC report to confirm UPC-A digits are positioned correctly (no overlap with quiet zones or report elements).
Excessively large
Excessively large
UPCEANLeadDigitSpace values may cause the barcode to exceed the RDLC Image report item bounds. Do test with sample data first.
Calculating UPC-A Check Digit for RDLC Reports (C#)
Top
UPC-A barcodes require a mandatory check digit (MOD 10 calculation) for data integrity in RDLC reports.
The library auto-calculates this digit, but understanding the logic ensures valid data input for RDLC.
UPC-A Check Digit Calculation
- Assign "odd/even" positions to digits, starting from the rightmost digit (right = odd, moving left = even).
- Sum digits in all odd positions, then multiply the result by 3.
- Sum digits in all even positions.
- Add the totals from steps 2 and 3.
- The check digit is the number that makes this total divisible by 10 (if total is already divisible by 10, check digit = 0).
Example for RDLC Data Validation
- Input UPC-A data: 12345678901 (11 digits)
- Calculated check digit: 2
- Full UPC-A code (for RDLC): 123456789012
Summary
Top- The core workflow for generating UPC-A in an RDLC Local Report is
- Initialize Linear barcode object
- Input 11/12-digit UPC-A data
- Set barcode type as
BarcodeType.UPCA - Generate, customize UPC-A barcode byte stream
- Bind barcode binary data to the RDLC Image report item
- Render through the ReportViewer Control (ASP.NET/WinForms)
- Key UPC-A customizations for RDLC
Quiet zone indicator visibility (ShowQuietZoneIndicator), digit spacing (UPCEANLeadDigitSpace/UPCEANTrailDigitSpace), and digit font size/position (UPCEANLeadTrailDigitSizeRatio/UPCEANLeadDigitYShift). -
Critical UPC-A rules for RDLC
Mandatory MOD 10 check digit (auto-calculated by the library), compliance with quiet zone standards, and validation of input data (11/12 digits) to avoid encoding errors in ASP.NET/WinForms projects.
Common Asked Questions
What is a GTIN-12 UPC-A barcode?
GTIN-12 is a 12 digits Global Trade Item Number. It is usually encoded in UPC-A barcode. The 12 digits Global Trade Item Number includes 11 digits of data message,
and one digit of check sum digit.
Using RDLC Barcode Generation Library, you can input 12-digit GS1 numeric data or 13-digits data with checksum digit in report barcode item data source.
What is the difference between UPC-A and UPC-E?
Both of UPC-A and UPC-E are UPC barcode.
UPC-A is a 12-digit barcode, and UPC-E is a compressed UPC-A with 6 digits code. The UPC-E will be used in limited space for a barcode.
You can create both UPC-A and UPC-E images in RDLC reports in report designer and preview UPC barcode in report viewer using .NET RDLC barcode library.
What is the difference between EAN-13 and UPC-A?
UPC-A Format barcodes have traditionally been used in the North America (USA and Canada),
whereas EAN-13 format barcodes have been used throughout the rest of the world.
RDLC Barcode Generator SDK supports both UPC and EAN with add-on symbol barcode generation in RDLC reports in .NET C#/VB.NET class, ASP.NET Core, WinForms, WPF applications.
What is the minimum & maximum size for a UPC-A barcode?
- The Minimum X-dimension for the UPC-A barcode is 0.0104 inches.
- The Maximum X-dimension for the UPC-A barcode is 0.0260 inches
