How to Read Barcodes in C# for .NET 5 using Iron Barcode

In this tutorial, you will learn how to read barcodes in C# using the Iron Barcode library. First, open Visual Studio and navigate to the Package Manager Console to install the Iron Barcode library by typing:

Install-Package BarCode

Once installed, proceed to the Program.cs file to write the necessary code. Begin by adding the proper namespace:

using IronBarCode;

using IronBarCode;

Imports IronBarCode

Reading a barcode is simplified with the method BarcodeReader.QuicklyReadOneBarcode, which takes the file name of the barcode image as a parameter. Here is an example showing how to use this method:

using System;
using IronBarCode;

namespace BarcodeReaderExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // File path to the barcode image
            string barcodeImagePath = "barcode.png";

            // Try to read a single barcode from the image
            var barcodeResult = BarcodeReader.QuicklyReadOneBarcode(barcodeImagePath);

            // Check if the barcode was successfully read
            if (barcodeResult != null)
            {
                // Print the decoded barcode value to the console
                Console.WriteLine($"Barcode Value: {barcodeResult.Text}");
            }
            else
            {
                // Inform the user that no barcode was found
                Console.WriteLine("No barcode found in the image.");
            }
        }
    }
}

using System;
using IronBarCode;

namespace BarcodeReaderExample
{
    class Program
    {
        static void Main(string[] args)
        {
            // File path to the barcode image
            string barcodeImagePath = "barcode.png";

            // Try to read a single barcode from the image
            var barcodeResult = BarcodeReader.QuicklyReadOneBarcode(barcodeImagePath);

            // Check if the barcode was successfully read
            if (barcodeResult != null)
            {
                // Print the decoded barcode value to the console
                Console.WriteLine($"Barcode Value: {barcodeResult.Text}");
            }
            else
            {
                // Inform the user that no barcode was found
                Console.WriteLine("No barcode found in the image.");
            }
        }
    }
}

Imports System
Imports IronBarCode

Namespace BarcodeReaderExample
	Friend Class Program
		Shared Sub Main(ByVal args() As String)
			' File path to the barcode image
			Dim barcodeImagePath As String = "barcode.png"

			' Try to read a single barcode from the image
			Dim barcodeResult = BarcodeReader.QuicklyReadOneBarcode(barcodeImagePath)

			' Check if the barcode was successfully read
			If barcodeResult IsNot Nothing Then
				' Print the decoded barcode value to the console
				Console.WriteLine($"Barcode Value: {barcodeResult.Text}")
			Else
				' Inform the user that no barcode was found
				Console.WriteLine("No barcode found in the image.")
			End If
		End Sub
	End Class
End Namespace

Key Points:

• Ensure that the barcode.png image is placed in the output directory of your project, typically the bin folder, to make sure it can be accessed when the program runs.
• The QuicklyReadOneBarcode method attempts to read a single barcode from the provided image file. It returns a BarcodeResult object upon success, or null if no barcode is found.

Running the program will successfully read and display the barcode value. This straightforward approach enables efficient barcode reading using C#.

Further Reading: Read Barcodes in C#