QR Code Make

Question

QR Code in C# asp.net

Leon D · Answer

For QR code generation, you can utilize Free Spire.Barcode. First, install it via NuGet: Install-Package FreeSpire.Barcode Second, refer to the following code to generate a QR code: using Spire.Barcode; using System.Drawing.Imaging; namespace QRGeneration { internal class Program { static void Main(string[] args) { // Configure the barcode settings for QR code generation var settings = new BarcodeSettings { // Set barcode type to QR Code Type = BarCodeType.QRCode, // Set the main data to encode into the QR code Data = "https://x.com/", Data2D = "https://x.com/", // Set error correction level to Medium QRCodeECL = QRCodeECL.M, // Set the width of the bar module X = 3, // Hide text (QR code data) ShowText = false }; // Create a BarCodeGenerator object using the defined settings var generator = new BarCodeGenerator(settings); // Generate the QR code image var qrCodeImage = generator.GenerateImage(); // Save the QR code image as a PNG file qrCodeImage.Save("simple_qr_code.png", ImageFormat.Png); } } } This library also allows you to personalize QR code, including adding logo and text labels, customizing border, backgroud color, image size and more. References: https://www.e-iceblue.com/Tutorials/NET/Spire.Barcode-for-.NET/Program-Guide/Create-and-Scan-Barcode/generate-qr-code-in-asp-net-csharp.html https://medium.com/@alice.yang_10652/c-qr-code-generator-how-to-create-and-customize-qr-codes-full-guide-42bf9473e187

Sandhiya Priya · Answer

Absolutely! Generating QR codes in C# ASP.NET is quite straightforward using libraries like QRCoder (very popular, open-source, and easy to use). Here’s a comprehensive guide for both Web Forms and MVC projects. 1. Install the QRCoder NuGet Package Use NuGet Package Manager : Install-Package QRCoder Or via the NuGet GUI in Visual Studio. 2. Generate QR Code in ASP.NET (Web Forms) Example: Display QR Code in an Image control ASPX Page: Code-behind (C#): using QRCoder; using System.Drawing; using System.IO; protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { string qrText = "https://www.example.com"; // Your URL or text using (QRCodeGenerator qrGenerator = new QRCodeGenerator()) { QRCodeData qrCodeData = qrGenerator.CreateQrCode(qrText, QRCodeGenerator.ECCLevel.Q); using (QRCode qrCode = new QRCode(qrCodeData)) { using (Bitmap qrCodeImage = qrCode.GetGraphic(20)) { using (MemoryStream ms = new MemoryStream()) { qrCodeImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png); byte[] byteImage = ms.ToArray(); imgQRCode.ImageUrl = "data:image/png;base64," + Convert.ToBase64String(byteImage); } } } } } } This generates a QR code dynamically and displays it in your ASP.NET page. 3. Generate QR Code in ASP.NET MVC Controller Action: using QRCoder; using System.Drawing; using System.IO; using System.Web.Mvc; public ActionResult GenerateQRCode(string text = "https://www.example.com") { using (QRCodeGenerator qrGenerator = new QRCodeGenerator()) { QRCodeData qrCodeData = qrGenerator.CreateQrCode(text, QRCodeGenerator.ECCLevel.Q); using (QRCode qrCode = new QRCode(qrCodeData)) { using (Bitmap qrCodeImage = qrCode.GetGraphic(20)) { using (MemoryStream ms = new MemoryStream()) { qrCodeImage.Save(ms, System.Drawing.Imaging.ImageFormat.Png); return File(ms.ToArray(), "image/png"); } } } } } View: This way, the QR code is generated dynamically and rendered as an image in the browser. 4. Customization Options (QRCoder) Pixel size: Adjust the GetGraphic() parameter Colors: GetGraphic(20, Color.Black, Color.White) for foreground/background Logo in QR: GetGraphic(20, Color.Black, Color.White, logoBitmap) Error correction level: L, M, Q, H (higher = more robust but denser) 5. Tips for ASP.NET Projects Cache QR codes if generating repeatedly to improve performance. For high-traffic websites, consider generating QR codes asynchronously . Use PNG for better quality (avoid JPEG artifacts).

QR Code Make

Insert Link

Embed YouTube Video

Table Options

Insert Image

Answers (2)