Learn how to read Code 39 barcodes using C# in ASP.NET, WinForms, WPF, VB.NET & Console Applications This tutorial helps you implement Code 39 barcode scanning in your .NET projects. You will learn how to install the library, read standard Code 39 barcodes, and process barcodes with checksum validation.

The KeepAutomation C# Code 39 Reader SDK is a high-performance linear and 2D barcode recognition library for the .NET platform. It supports fast and accurate decoding of Code 39 barcodes across all .NET application types.

Please download KA.Barcode Reader for .NET free of charge. In the unzipped trial package, you will find:

Note that: This trial version can be used infinitely. But the first character of a barcode symbology is decoded randomly by our .NET Barcode Reader.

You can quickly decode Code 39 barcodes using the BarcodeScanner.Scan() method. Execution Phase

1. Call the static Scan method
2. Pass the image file path as the first parameter
3. Specify BarcodeType.Code39 as the target barcode type
4. Retrieve decoded results as a string array

Note:

• Check the returned array for valid decoded text
• Confirm the output matches the original encoded data

The Code 39 standard does not include built-in checksum rules. If your Code 39 barcode uses a check digit, you can enable validation using ScanOptions.

How to Enable Checksum Validation

1. Create a ScanOptions object for Code 39
2. Set Code39WithCheckCharacter = true
3. The library will validate the checksum and return data without the check digit
4. Use GetBarcodeProps() to retrieve the actual checksum value

Available Code 39 Properties

• HasChecksum: Indicates whether a checksum is present
• Checksum: The numeric checksum value
• ShowChar: The readable checksum character