How to Create Barcodes in ASP .NET with IronBarcode

Name: IronQR
Brand: Iron Software
Availability: InStock
Rating: 5 (10 reviews)

ByJordi Bardia

July 30, 2023

Updated June 2, 2025

In this tutorial, we explore how to create barcodes in ASP.NET using Iron Barcode, a powerful library, and Visual Studio 2022. Start by installing Iron Barcode through the NuGet package manager, ensuring you have the latest version for optimal performance. The tutorial demonstrates how to navigate to the Index.cshtml.cs file under the 'Pages' folder, where pre-written code generates a QR code with a URL and text annotations. Customize your barcode by changing its color to green using the 'change barcode color' method, setting margins, and saving it as a PNG file in the wwwroot directory. The barcode image path is set to locate this image. An HTML form with a submit button is added to the Index.cshtml file, triggering the barcode generation process upon submission. An IMG tag displays the created barcode. Run the project, press the 'Create Barcode' button, and view the output featuring your customized barcode. This guide concludes with encouragement to subscribe for more tips from Iron Software.

Code Sample for Barcode Generation in ASP.NET:

using IronBarCode; // Import the IronBarcode library
using System;
using System.IO;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace YourNamespace.Pages
{
    public class IndexModel : PageModel
    {
        public string BarcodeImagePath { get; private set; }

        // Handles HTTP GET requests
        public void OnGet()
        {
            // Path where the barcode image will be saved
            BarcodeImagePath = "/images/barcode.png";
        }

        // Handles HTTP POST requests
        public void OnPost()
        {
            // Create QR Code with URL and additional text
            var QRCode = QRCodeWriter.CreateQrCodeWithLogo("https://example.com", "Your Text");

            // Customize the barcode's appearance
            QRCode.ChangeBarCodeColor(System.Drawing.Color.Green);

            // Define the file path in the wwwroot directory for saving the barcode
            var filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot" + BarcodeImagePath);
            QRCode.SaveAsPng(filePath); // Save the barcode as a PNG file
        }
    }
}

using IronBarCode; // Import the IronBarcode library
using System;
using System.IO;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace YourNamespace.Pages
{
    public class IndexModel : PageModel
    {
        public string BarcodeImagePath { get; private set; }

        // Handles HTTP GET requests
        public void OnGet()
        {
            // Path where the barcode image will be saved
            BarcodeImagePath = "/images/barcode.png";
        }

        // Handles HTTP POST requests
        public void OnPost()
        {
            // Create QR Code with URL and additional text
            var QRCode = QRCodeWriter.CreateQrCodeWithLogo("https://example.com", "Your Text");

            // Customize the barcode's appearance
            QRCode.ChangeBarCodeColor(System.Drawing.Color.Green);

            // Define the file path in the wwwroot directory for saving the barcode
            var filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot" + BarcodeImagePath);
            QRCode.SaveAsPng(filePath); // Save the barcode as a PNG file
        }
    }
}

Imports IronBarCode ' Import the IronBarcode library
Imports System
Imports System.IO
Imports Microsoft.AspNetCore.Mvc.RazorPages

Namespace YourNamespace.Pages
	Public Class IndexModel
		Inherits PageModel

		Private privateBarcodeImagePath As String
		Public Property BarcodeImagePath() As String
			Get
				Return privateBarcodeImagePath
			End Get
			Private Set(ByVal value As String)
				privateBarcodeImagePath = value
			End Set
		End Property

		' Handles HTTP GET requests
		Public Sub OnGet()
			' Path where the barcode image will be saved
			BarcodeImagePath = "/images/barcode.png"
		End Sub

		' Handles HTTP POST requests
		Public Sub OnPost()
			' Create QR Code with URL and additional text
			Dim QRCode = QRCodeWriter.CreateQrCodeWithLogo("https://example.com", "Your Text")

			' Customize the barcode's appearance
			QRCode.ChangeBarCodeColor(System.Drawing.Color.Green)

			' Define the file path in the wwwroot directory for saving the barcode
			Dim filePath = Path.Combine(Directory.GetCurrentDirectory(), "wwwroot" & BarcodeImagePath)
			QRCode.SaveAsPng(filePath) ' Save the barcode as a PNG file
		End Sub
	End Class
End Namespace

$vbLabelText $csharpLabel

HTML Form for Triggering Barcode Generation:

<!DOCTYPE html>
<html>
<head>
    <title>Barcode Generator</title>
</head>
<body>
    <form method="POST">
        <button type="submit">Create Barcode</button>
    </form>
    <div>
        <img src="@Model.BarcodeImagePath" alt="Generated Barcode" />
    </div>
</body>
</html>

<!DOCTYPE html>
<html>
<head>
    <title>Barcode Generator</title>
</head>
<body>
    <form method="POST">
        <button type="submit">Create Barcode</button>
    </form>
    <div>
        <img src="@Model.BarcodeImagePath" alt="Generated Barcode" />
    </div>
</body>
</html>

HTML

Further Reading: How to Create Barcodes in ASP .NET with IronBarcode

Jordi Bardia

Chat with engineering team now

Software Engineer

Jordi is most proficient in Python, C# and C++, when he isn’t leveraging his skills at Iron Software; he’s game programming. Sharing responsibilities for product testing, product development and research, Jordi adds immense value to continual product improvement. The varied experience keeps him challenged and engaged, and he says it’s one of his favorite aspects of working with Iron Software. Jordi grew up in Miami, Florida and studied Computer Science and Statistics at University of Florida.

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