Emgu cv camera / webcam

using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
using OfficeOpenXml;
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Configuration;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Media;
using System.Net.NetworkInformation;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace AplikasiAbsen16082020
{
    public partial class Form1 : Form
    {
        Capture camera;
        Image<Bgr, Byte> currentFrame;
        List<Image<Gray, byte>> trainingimages = new List<Image<Gray, byte>>();
       
        public Form1()
        {
            InitializeComponent();
            face = new HaarCascade("haarcascade_frontalface_default.xml");
            
        }
        private void Form1_Load(object sender, EventArgs e)
        {
                camera = new Capture(1);
                camera.QueryFrame();
                Application.Idle += new EventHandler(FrameGrabber);
        }

        private void FrameGrabber(object sender, EventArgs e)
        {
           
                currentFrame = camera.QueryFrame().Resize(440, 330, Emgu.CV.CvEnum.INTER.CV_INTER_CUBIC);
                currentFrame.Flip(Emgu.CV.CvEnum.FLIP.HORIZONTAL);
                gray = currentFrame.Convert<Gray, Byte>();
                camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_WIDTH, 640.01);
                camera.SetCaptureProperty(CAP_PROP.CV_CAP_PROP_FRAME_HEIGHT, 480.01);
                imageBox1.Image = currentFrame;            
        }
	}
}