How To Generate Barcode In ASP.NET MVC Core

Add a class in the Models folder and write or copy-paste the below code.

using System.ComponentModel.DataAnnotations;

namespace GenerateBarcodeMVCCore6_Demo.Models
{
    public class GenerateBarcodeModel
    {
        [Display(Name = "Enter Barcode Text")]
        public string BarcodeText
        {
            get;
            set;
        }
    }
}

We will use exiting HomeController to write the code.

using GenerateBarcodeMVCCore6_Demo.Models;
using IronBarCode;
using Microsoft.AspNetCore.Mvc;
using System.Diagnostics;
using System.Drawing;

namespace GenerateBarcodeMVCCore6_Demo.Controllers
{
    public class HomeController : Controller
    {
        private readonly IWebHostEnvironment _environment;
        public HomeController(IWebHostEnvironment environment)
        {
            _environment = environment;
        }

        public IActionResult CreateBarcode()
        {
            return View();
        }

        [HttpPost]
        public IActionResult CreateBarcode(GenerateBarcodeModel generateBarcode)
        {
            try
            {
                GeneratedBarcode barcode = IronBarCode.BarcodeWriter.CreateBarcode(generateBarcode.BarcodeText, BarcodeWriterEncoding.Code128);
                barcode.ResizeTo(400, 120);
                barcode.AddBarcodeValueTextBelowBarcode();
                // Styling a Barcode and adding annotation text
                barcode.ChangeBarCodeColor(Color.BlueViolet);
                barcode.SetMargins(10);
                string path = Path.Combine(_environment.WebRootPath, "GeneratedBarcode");
                if (!Directory.Exists(path))
                {
                    Directory.CreateDirectory(path);
                }
                string filePath = Path.Combine(_environment.WebRootPath, "GeneratedBarcode/barcode.png");
                barcode.SaveAsPng(filePath);
                string fileName = Path.GetFileName(filePath);
                string imageUrl = $"{this.Request.Scheme}://{this.Request.Host}{this.Request.PathBase}" + "/GeneratedBarcode/" + fileName;
                ViewBag.QrCodeUri = imageUrl;
            }
            catch (Exception)
            {
                throw;
            }
            return View();
        }

    }
}

Next, "Add View" - right-click on the CreateBarcode action method in HomeController class. Select "Add View" then select "Razor View." Next, click on the "Add" button.

• In the view name CreateBarcode default name as action method in HomeController.
• Template Create
• In the Model, class drop-down, select GenerateBarcodeModel(GenerateBarcodeMVCCore6_Demo.Models).
• Select Add.

The following is the CreateBarcode View code.

@model GenerateBarcodeMVCCore6_Demo.Models.GenerateBarcodeModel

@{
    ViewData["Title"] = "CreateBarcode";
}

<h4>Generate Barcode</h4>

<div class="row">
    <div class="col-md-4">
        <form asp-action="CreateBarcode">
            <div asp-validation-summary="ModelOnly" class="text-danger"></div>
            <div class="form-group">
                <label asp-for="BarcodeText" class="control-label"></label>
                <input asp-for="BarcodeText" class="form-control" />
                <span asp-validation-for="BarcodeText" class="text-danger"></span>
            </div>
            <br />
            <div class="form-group">
                <input type="submit" value="Generate Barcode" class="btn btn-primary" />
            </div>
             <div class="form-group">
        <img src="@ViewBag.QrCodeUri" class="img-thumbnail" />
      </div>
        </form>
    </div>
</div>

@section Scripts {
    @{await Html.RenderPartialAsync("_ValidationScriptsPartial");}
}

Run project Ctrl+F5.

Conclusion

Finally, we can create a Barcode. We can save Barcodes as jpg, png images, PDF, or HTML files. We can also add a logo to our Barcode file, with its high-performance levels and a vast range of capabilities available to developers working with the Portable Document Format.