ASP.net C# : How to create a QR code scanner with webcam?

Question

Facing problem in detecting and decoding, current phase just can open the webcam, but can't detect the QR code. Any suggestion?

I was using the zxing for the QR code decode, and Aforge to connected the webcam.

Here the code:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using com.google.zxing.qrcode;

using com.google.zxing.qrcode.detector;

using COMMON = com.google.zxing.common;

using com.google.zxing;

using AForge.Video;

using AForge.Video.DirectShow;

namespace WindowsFormsApplication2

{

    public partial class Form1 : Form

    {

        public QRCodeReader reader = new QRCodeReader();

        public Bitmap current { get; private set; }

        //public event EventHandler ResultFound;

        Bitmap video;

        public bool Run { get; set; }

        public bool newBitmap { get; set; }

       private FilterInfoCollection VideoCaptureDevices;

        private VideoCaptureDevice FinalVideo;

       // com.google.zxing.Reader reader = new com.google.zxing.MultiFormatReader();

       public Form1()

        {

            InitializeComponent();

       }

        private void Form1_Load(object sender, EventArgs e)

        {

            VideoCaptureDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            foreach (FilterInfo VideoCaptureDevice in VideoCaptureDevices) 

            {

              comboBox1.Items.Add(VideoCaptureDevice.Name);

            }

            comboBox1.SelectedIndex = 0;

            FinalVideo = new VideoCaptureDevice(VideoCaptureDevices[comboBox1.SelectedIndex].MonikerString);

            FinalVideo.NewFrame += new NewFrameEventHandler(FinalVideo_NewFrame);

            FinalVideo.Start();       

        }

        private void button1_Click(object sender, EventArgs e)

        {

            //GetQRValue(video);

            LuminanceSource source = new RGBLuminanceSource(video, video.Width, video.Height);

            com.google.zxing.BinaryBitmap bitmap = new com.google.zxing.BinaryBitmap(new COMMON.HybridBinarizer(source));

            Result result;

            try

            {

                result = new MultiFormatReader().decode(bitmap);

                label1.Text = result.Text;

            }

            catch (ReaderException re)

            {

                label1.Text = re.Message;

            }           

        }

        void FinalVideo_NewFrame(object sender, NewFrameEventArgs eventArgs)

        {

            video = (Bitmap)eventArgs.Frame.Clone();

            pictureBox1.Image = video;

            if (Detect( video)!="")

            {

                button2.Visible = false;

            }

            if (GetQRValue(video) != "")

            { 

            }            

        }

        private void button2_Click(object sender, EventArgs e)

        {

            if (FinalVideo.IsRunning)

            {

                FinalVideo.Stop();

            }

        }

public string Detect(Bitmap bitmap)

        {

            try

            {

               com.google.zxing.LuminanceSource source = new RGBLuminanceSource(bitmap, bitmap.Width, bitmap.Height);

               var binarizer = new HybridBinarizer(source);

               var binBitmap = new BinaryBitmap(binarizer);

             BitMatrix bm = binBitmap.BlackMatrix;

                  Detector detector = new Detector(bm);

                  DetectorResult result = detector.detect();

                 string retStr = "Found at points ";

                  foreach (ResultPoint point in result.Points)

                  {

                      retStr += point.ToString() + ", ";

                  }

                  return retStr;

              }

              catch

              {

                  return "Failed to detect QR code.";

              }

          }
     }
}