Read QR Code Value

VB C#

string(13) "Click to copy"

using IronQr;
using System.Drawing;

// Import image
var inputImage = Image.FromFile("sample.jpg");

// Load the asset into QrImageInput
QrImageInput imageInput = new QrImageInput(inputImage);

// Create a QR Reader object
QrReader reader = new QrReader();

// Read the Input an get all embedded QR Codes
IEnumerable<QrResult> results = reader.Read(imageInput);

// Display the value of the first QR code found
Console.WriteLine($"QR code value is {results.First().Value}");

Imports IronQr
Imports System.Drawing

' Import image
Dim inputImage As Image = Image.FromFile("sample.jpg")

' Load the asset into QrImageInput
Dim imageInput As New QrImageInput(inputImage)

' Create a QR Reader object
Dim reader As New QrReader()

' Read the Input and get all embedded QR Codes
Dim results As IEnumerable(Of QrResult) = reader.Read(imageInput)

' Display the value of the first QR code found
Console.WriteLine($"QR code value is {results.First().Value}")

Install-Package IronQR

Read QR Code Value

Easily extract the QR code's content as a ready-to-use string, allowing you to immediately display the value to a user, save it to a database, or pass it to another function. IronQR reads the embedded data from any image using QrReader.Read() and exposes it through the Value property on each QrResult.

5-step guide for reading a QR code value

using IronQr;
QrImageInput imageInput = new QrImageInput(Image.FromFile("sample.jpg"));
QrReader reader = new QrReader();
IEnumerable<QrResult> results = reader.Read(imageInput);
Console.WriteLine(results.First().Value);

Code Explanation

An image containing a QR code is loaded from disk and wrapped in a QrImageInput object, which tells IronQR what to scan. A QrReader instance processes the input and returns a collection of QrResult objects, one per QR code found in the image. Calling .Value on a result gives the decoded string directly, whether that is a URL, a product ID, or any other encoded text.

Explore How to Read QR Code Values with IronQR.