How to create, print EAN-13 in Crystal Reports in ASP.NET, WinForms application?

This barcode generator is a robust report tool which completely integrated into .NET development environment such as Windows Forms or web applications. It is easy to change field in Crystal Report into EAN-13 barcodes with simple clicks.

Generating Barcode EAN-13 in .NET is one of the functions in OnBarcode's .NET Barcode Control for Crystal Reports, which supports creating & printing EAN-13 and 30+ other linear & 2D bar codes for C#, VB.NET & ASP.NET applications with detailed online how-to guide:

This guide provides a structured, step-by-step approach to generating EAN-13 (a linear barcode symbology for global product identification) in Crystal Reports for .NET within ASP.NET and WinForms projects. It covers core implementation, add-on symbol configuration, human-readable text customization, and check digit validation to ensure compliance with GS1 standards and seamless integration with Crystal Reports components.

We have two step by step tutorials to create new ASP.NET and Windows Forms .net framework projects to print barcodes in .rpt report file in .NET application.

• Print barcode in Crystal Reports in ASP.NET web application
• Print barcode in Crystal Reports in Windows Forms application

After you have created a new ASP.NET or Windows Forms project with the first barcode printed in the .rpt report, we will learn how to generate and customize EAN-13 barcodes in Crystal Reports in the .NET application.

Here we will start to print EAN-13 in the Crystal Reports report designer and report viewer.

In Visual Studio IDE,

• For ASP.NET project, open file Default.aspx.cs
• For Windows Forms project, open file Form1.cs

Follow the steps to embed EAN-13 barcodes into a Crystal Report:

1. Change barcode type from Code 128 to EAN-13. BarcodeType.EAN13;

After successfully generating the EAN-13 barcodes in report file in your C# ASP.NET/WinForms project, we will further customize the EAN-13 in the report.

EAN-13 supports 2-digit or 5-digit add-on symbols (positioned after the main symbol's right Quiet Zone) for supplementary data (e.g., price, batch numbers) in Crystal Reports product labels.

To generate EAN-13 with add-on symbols for Crystal Reports:

1. Set Type to BarcodeType.EAN13_2 (2-digit add-on) or BarcodeType.EAN13_5 (5-digit add-on).
2. Assign the main EAN-13 data to the Data property (12 or 13 digits).
3. Set supplementary data to the SupData property (2 or 5 digits, matching the add-on type).

The OnBarcode library offers additional properties to customize add-on symbol spacing and alignment (optimize for Crystal Reports Page Header/Footer layout):

• SupHeight : Add-on symbol height, % of the EAN-13 main symbol. The default is 0.8f (80% of the main symbol height).
• SubSpace : Modify the gap between the main symbol and add-on (ensure compliance with GS1 quiet zone standards). The default is 15 pixel. The maximum space shall be 12X (property X is the bar module width).

The GS1 System recommends OCR font for EAN-13's human-readable text (HRI) to ensure scannability and compliance. Crystal Reports for .NET supports HRI customization via the TextFont and TextMargin properties.

1. Set AutoResizeBarcodeText to false, to resize printed EAN-13 text font size.
2. Set TextFont to "OCR-B" (match GS1 standards for Crystal Reports printing), and new font size.
3. Configure TextMargin to control spacing between the barcode bars and HRI (minimum 0.5X per GS1, typically 1X for readability).
4. Config text color through property TextColor

Control the display of the EAN-13 quiet zone indicator (a small mark at the end of the barcode) for Crystal Reports layout optimization:

• Set ShowQuietZoneIndicator to false, to hide the EAN-13 quiet zone indicator mark.

Adjust spacing for improved readability in Crystal Reports:

• UPCEANLeadDigitSpace: Space between the first digit and start bar (default: 0).
• UPCEANTrailDigitSpace: Space between the stop bar and quiet zone indicator (default: 0).

EAN-13 requires a mandatory check digit (calculated via module 10 algorithm) to ensure data integrity. The OnBarcode library auto-calculates the check digit if 12 digits are provided; if 13 digits are provided, it validates the check digit.

For a 12-digit EAN-13 input (e.g. "123456789012"):

1. Sum the digits in odd positions (1st, 3rd, 5th, ..., 11th) and multiply by 3.
2. Sum the digits in even positions (2nd, 4th, 6th, ..., 12th).
3. Add the two sums together.
4. Calculate the check digit as the value needed to round the total to the next multiple of 10 (e.g. input "123456789012" yields check digit "8").

Here we have explained how to generate, print EAN-13 barcodes in Crystal Reports and customize it using OnBarcode Barcode Generator for Crystal Reports C# library.

Print EAN-13 in Report: Generate EAN-13 in C# and bind it to Crystal Reports for .NET using ReportDocument, CrystalReportViewer, and .rpt file templates (compatible with ASP.NET Web Forms/WinForms PictureBox controls).

Customization: Use add-on symbols for supplementary data, GS1-compliant OCR-B font for HRI, and adjust spacing/quiet zone settings to fit Crystal Reports layout (Header/Footer/Details sections).

Data Integrity: Ensure EAN-13 data is numeric (12/13 digits) and validate check digits (auto-calculated by the library) to comply with GS1 standards and avoid invalid barcodes in report distribution.