How to create QR Code

Hi Naimish

  In below code i am getting error

            QRCodeData is an ambiguous reference between QrCoder.qrCodeData and SapBobsCom.qrCodeData

Thanks

To create a QR code in .NET C# that includes Item Code, Description, Expiry Date, Batch No, and Quantity, you can use a QR code library such as QRCoder. Here’s a simple example of how you can do this:

using QRCoder;
using System.Drawing;

public class Program
{
    public static void Main()
    {
        string itemCode = "ITEM123";
        string description = "Sample Item";
        string expiryDate = "2022-12-31";
        string batchNo = "BATCH001";
        string quantity = "100";

        string qrCodeData = $"Item Code: {itemCode}, Description: {description}, Expiry Date: {expiryDate}, Batch No: {batchNo}, Quantity: {quantity}";

        QRCodeGenerator qrGenerator = new QRCodeGenerator();
        QRCodeData qrCodeData = qrGenerator.CreateQrCode(qrCodeData, QRCodeGenerator.ECCLevel.Q);
        QRCode qrCode = new QRCode(qrCodeData);

        Bitmap qrCodeImage = qrCode.GetGraphic(20);
        qrCodeImage.Save("QRCode.png", System.Drawing.Imaging.ImageFormat.Png);
    }
}

In this code, we first define the data we want to encode in the QR code. We then create a QRCodeGenerator object and use it to create QRCodeData from our data string. We then create a QRCode object from the QRCodeData, and finally, we generate a Bitmap image from the QRCode and save it as a PNG file.

Please note that you’ll need to install the QRCoder library in your project. You can do this via NuGet Package Manager in Visual Studio.

Thanks

To create a QR code in Dot Net that displays item code, description, expiry date, batch number, and quantity, you can use a library called "QRCoder." This library allows you to generate QR codes easily and efficiently.

1. Install the QRCoder library using NuGet. Open the NuGet Package Manager Console and run the following command:

2. Install-Package QRCoder
   

    

3. Import the necessary namespaces in your code file:

4. using QRCoder;
   using System.Drawing;
   

5. Create a method to generate the QR code:

6. public static Bitmap GenerateQRCode(string data)
   {
       QRCodeGenerator qrGenerator = new QRCodeGenerator();
       QRCodeData qrCodeData = qrGenerator.CreateQrCode(data, QRCodeGenerator.ECCLevel.Q);
       QRCode qrCode = new QRCode(qrCodeData);
       Bitmap qrCodeImage = qrCode.GetGraphic(20); // Adjust the size of the QR code as needed
       return qrCodeImage;
   }
   

7. Call the GenerateQRCode method and pass in the data you want to encode:

8. string itemCode = "12345";
   string description = "Product description";
   string expiryDate = "2022-12-31";
   string batchNo = "ABC123";
   int quantity = 10;
   
   string qrData = $"Item Code: {itemCode}\nDescription: {description}\nExpiry Date: {expiryDate}\nBatch No: {batchNo}\nQuantity: {quantity}";
   
   Bitmap qrCodeImage = GenerateQRCode(qrData);
   

9. You can now use the qrCodeImage bitmap to display or save the QR code as needed.

10. Remember to handle any exceptions that may occur during the QR code generation process and customize the code according to your specific requirements.

    By following these steps, you'll be able to create a QR code in Dot Net that displays the desired information.

You can use Free Spire.Barcode to easily generate QR code.

https://www.e-iceblue.com/Download/download-barcode-for-net-now.html

Here is the article for your reference:

https://www.c-sharpcorner.com/UploadFile/38268a/generating-qr-code-in-C-Sharp/

https://www.c-sharpcorner.com/article/creating-qrcode-in-asp-net-core/

https://www.c-sharpcorner.com/blogs/how-to-generate-qr-code-using-asp-net