C# Code 39 Generator Library SDK

Integration & Developer Guide for Code 39 linear barcode image generation in C#

Generate barcode Code 39 images in Visual C# .NET with complete sample C# source code

In this C# tutorial, you will learn how to generate Code 39 barcode images in .NET Windows and ASP.NET applications using C#.

  • Fully support ISO/IEC 16388 standard
  • Easy to encode characters with Code 39 standard mode or full ASCII mode
  • Encode and draw high dpi Code 39 image on specific area for printing
  • Easy to enable Code 39 generation in ASP.NET Core, MVC, WinForms, WPF, web service.
  • Support .NET 8, 7, 6, 5, .NET Core 3.1, 2.1, and .NET Framework

How to create Code 39 barcodes in ASP.NET and .Windows using C#

  1. Download .NET Code 39 Barcode Generator Suite
  2. Install C# library to create Code 39 barcodes in .NET projects
  3. Step by Step Tutorial

Code 39 Barcode Introduction

Code 39, also known as Alpha39, Code 3 of 9, Code 3/9, Type 39, USS Code 39, or USD-3, is the first alpha-numeric linear barcode symbology used world-wide.

C# Code 39 Generator is one of the linear barcodes generation in OnBarcode's .NET Barcode Generation Controls, which generates & prints Code 39, Code 39 extension and other linear & 2D bar codes in C#.NET applications.
OnBarcode C# Barcode Generator makes it easy to generate, create Code 39 and other linear & 2d barcodes in Microsoft Word.
OnBarcode offers several Code 39 Generator components and software, such as Code 39 in .NET, Code 39 in Java, Code 39 in VB.NET, Code 39 in ASP.NET, Code 39 Generator.
This page is providing a complete C# source code for generating Code 39 barcode images in C# class library using C# Barcode generation .net SDK. Complete Code 39 custmoization settings is listed in C# Code 39 generation guide.

Code 39 barcode data characters encoding using C#


Code 39 standard mode

Code 39 barcode standard mode supports 43 characters, including
  • Numeric digit: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9
  • Uppercase letters (A - Z)
  • Special characters: - (Dash), $ (Dollar), % (Percentage), (Space), . (Point), / (Slash), + (Plus)
  • Start/Stop character
In C# code 39 barcode generator, you need choose barcode Type property value "BarcodeType.CODE39".
            Linear code39 = new Linear();

            code39.Type = BarcodeType.CODE39;

            //Input your barcode encoding data:
            code39.Data = "ABC-12345";

Code 39 Full ASCII mode

Code 39 supports encoding the full 128 character ASCII character set in accordance with ISO 646 IRV.
In C# code 39 barcode generator, you need choose barcode Type property value "BarcodeType.CODE39EX".
            Linear code39 = new Linear();

            code39.Type = BarcodeType.CODE39EX;

            //Input your barcode encoding data:
            code39.Data = "abc-12345";

Code 39 barcode check digit

Code 39 barcode does not include a checksum or check digit by default.

For applications requiring enhanced data security, the modulo 43 (MOD43) check character may be used as a check digit.

You can view the barcode Code 39 check digit calculator in details
In C#, to add checksum digit to Code 39 barcode, you need set property AddCheckSum to true.
            Linear code39 = new Linear();

            code39.Type = BarcodeType.CODE39;

            //Input your barcode encoding data:
            code39.Data = "ABC-123";

            code39.AddCheckSum = true;

Do not display Code 39 barcode check digit in HRI

You can also enable code 39 check digit, and hide it in the HRI (human readable interpretation).

In C# class, you need set property ShowCheckSumChar to false.
            // Display checksum digit at the end of barcode data.
            code39.ShowCheckSumChar = false;

Code 39 barcode Start/stop characters

Code 39 barcode uses asterisk character (*) as Start and Stop characters, and it should not be part of the Code 39 barcode data.

In C# class, you can display or hide start/stop characters (asterisk *) through property ShowStartStopInText.
            code39.ShowStartStopInText = false;

Code 39 Barcode Dimension Size in C#

In C# Code 39 generator, you can use the following barcode dimension size settings:
  • UOM: Unit of measure. You can choose PIXEL, CM or INCH.
  • X: Width of narrow element. The mimumum bar width is defined by the application specification
  • Y: Bar module height.
  • N: Wide/narrow ratio. the valid value is from 2.0 to 3.0 inclusive.
  • I: Width of intercharacter gap
    • minimum gap is equal to X
    • maximum: for X < 0.287mm, is 5.3X; for X >= 0.287mm, is 1.52mm or 3X, whichever is greater.
  • LeftMargin, RightMargin: Quiet zone. the minimum width of quiet zone is 10X.
You can view the Code 39 Barcode Size Calculator here.

An example C# source code to set Code 39 barcode image size.
            Linear code39 = new Linear();

            code39.Type = BarcodeType.CODE39;

            //Input your barcode encoding data:
            code39.Data = "ABC-123";
            code39.AddCheckSum = true;

            // Unit of measure, pixel, cm and inch supported.
            code39.UOM = UnitOfMeasure.PIXEL;
            code39.X = 3;
            code39.Y = 120;
            code39.N = 3.0f;
            code39.I = 1.2f;
            code39.LeftMargin = 30;
            code39.RightMargin = 30;


Code 39 barcode property settings using C#

.NET Barcode Generator library has provided 20+ property settings to customize the created Code 39 barcode images. You view the complete list of Code 39 barcode property settings here.

Example: How to Create Code-39 barcode in C# class

View the complate C# source code at How to generate Code 39 barcode in C# application?
More C# Barcode Generation Tutorials for Each Barcode

Barcode Control for C#.NET - Bar Code Type Generation

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