VB.NET Code 39 Generator Data Encoding Tutorial

sample source code to input valid data and generate linear Code 39 images in VB.NET


 

Setup Code 39 VB.NET Generator

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.

OnBarcode.com provides more details about how to set Code 39 barcode size and image in Barcode Generator Control on VB.NET:


Code 39 VB.NET Generator installation

1. Download the trial package and unzip

2. Copy OnBarcode.Barcode.WinForms.dll to your .NET project folder

3. Do not copy dll to .NET bin directory, .NET build tools will do it for you.

4. Add OnBarcode.Barcode.WinForms.dll to .NET project reference

5. Right click .NET Visual Studio Toolbox, select menu Choose Items...

6. In "Choose Toolbox Items" form, click button "Browse...", and select OnBarcode.Barcode.WinForms.dll

7. After selection, you will find four items under "Components" section: LinearWinForm, DataMatrixWinForm, PDF417WinForm, and QRCodeWinForm



After, get it ready in VB.NET by placing the following statement where Code 39 VB.NET Generator is needed:

Dim code39 As OnBarcode.Barcode.Linear

code39 = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

 

Select Data for Code 39 VB.NET Generator

There are three code sets of Code 39. They are code set A, code set B, and code set C. Code 39 in different code set encodes different types of data character.

Generate Code 39 with Numeric Character

Code 39 is capable of encoding number 0 to 9.

Sample Usage:

Dim code39 As OnBarcode.Barcode.Linear = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

code39.Data = "123"

Generate Code 39 using Uppercase Letters

Code 39 encodes uppercase letters A-Z.

Sample Usage:

Dim code39 As OnBarcode.Barcode.Linear = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

code39.Data = "ABC"

Make Code 39 using using Punctuations

Code 39 encodes - (Dash),. (Point), $ (Dollar), / (Slash), + (Plus) % (Percentage), and (Space).

Sample Usage:

Dim code39 As OnBarcode.Barcode.Linear = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

code39.Data = "+-"

 

Process Tilde in Code 39

If you want to use the tilde character "~" to specify special characters in the input data, please set property ProcessTilde to be true.

1-byte character: ~0dd/~1dd/~2dd (character value from 000 ~ 255); ASCII character '~' is presented by ~126 Strings from "~256" to "~299" are unused

2- byte character (Unicode): ~6ddddd (character value from 00000 ~ 65535) Strings from "~665536" to "~699999" are unused

Sample Usage:

code39.ProcessTilde = True

 

Valid length for Data in Code 39 VB.NET Generator

Code 39 Data Length

Code 39 is variable length symbology, which easily encodes data at any length.

Data Length in Code 39 VB.NET Generator

The value of property Data, which is used to define the data in Code 39, is a string value. You can input data at any length in the string.

Sample Usage:

Dim code39 As OnBarcode.Barcode.Linear = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

code39.Data = "1"

Sample Usage:

Dim code39 As OnBarcode.Barcode.Linear = New OnBarcode.Barcode.Linear

code39.Type = OnBarcode.Barcode.BarcodeType.CODE39

code39.Data = "12345678"









OnBarcode is a market-leading provider of barcode generator, reader controls and components for ASP.NET, Windows Forms, WPF, as well Java, Android, iOS (iPhone, iPad) across all major enterprise development platforms. We provides high quality tutorials and guides for various linear, 2d barcode information, such as C# Barcode, QR Code C#, QR Code VB.NET, QR Code ASP.NET, QR Code .NET, ASP.NET Barcode. OnBarcode barcode products are supported by RasterEdge ASP.NET Document Viewer, which supports ASP.NET PDF Viewer, ASP.NET MVC Document Viewer, ASP.NET PDF Editor, MVC PDF Viewer. And provide high quality C# Convert PDF to Tiff, C# Convert PDF to Word, C# Convert PDF to HTML, C# Convert PDF to Jpeg images, and their easy and simple documents, like C# PDF SDK, C# extract text from PDF, C# Compress PDF, Print PDF in C# and C# extract image from PDF.
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