Real-time frame of webcam capture transfer between forms in winforms

Question

Real-time frame of webcam capture transfer between forms in winforms

Ezgi Ecevit 106

I am designing an UI using windows forms app and i need to transfer the real-time frame of webcam capture between the forms.

This is my form2 and the webcam will capture the frame here and its code is shown below.

using System;  
using System.Collections.Generic;  
using System.ComponentModel;  
using System.Data;  
using System.Drawing;  
using System.Linq;  
using System.Text;  
using System.Threading.Tasks;  
using System.Windows.Forms;  

using AForge.Video;  
using AForge.Video.DirectShow;  


namespace MUI  
{  
    public partial class Form2 : Form  
    {  

        public Form2()  
        {  
            InitializeComponent();  
        }  

        FilterInfoCollection filterInfoCollection;  
        VideoCaptureDevice videoCaptureDevice;  





        public void videoCaptureDevice_NewFrame(object sender, NewFrameEventArgs eventArgs)  
        {  
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();  
        }  

        public Image img;  
        private void button1_Click(object sender, EventArgs e)  
        {  
            try  
            {  
                var cam = filterInfoCollection[comboBox1.SelectedIndex].MonikerString;  
                videoCaptureDevice = new VideoCaptureDevice(cam);  
                videoCaptureDevice.NewFrame += videoCaptureDevice_NewFrame;  
                videoCaptureDevice.Start();  
                img = pictureBox1.Image;  
                Form7 f7 = new Form7();  
                f7.Show();  
            }  
            catch (Exception)  
            {  

                throw;  
            }  


        }  

        private void button3_Click(object sender, EventArgs e)  
        {  

            videoCaptureDevice.Stop();  
            pictureBox1.Image = null;  
            this.Close();  
        }  

        private void button2_Click(object sender, EventArgs e)  
        {  
            videoCaptureDevice.Stop();  
            pictureBox1.Image = null;  
        }  

        public void Form2_Load(object sender, EventArgs e)  
        {  
            try  
            {  
                #region Devices  
                filterInfoCollection = new FilterInfoCollection(FilterCategory.VideoInputDevice);  
                foreach (FilterInfo filterInfo in filterInfoCollection)  
                {  
                    comboBox1.Items.Add(filterInfo.Name);  
                }  
                comboBox1.SelectedIndex = 0;  
                videoCaptureDevice = new VideoCaptureDevice();  
                #endregion  

            }  
            catch (Exception)  
            {  

                throw;  
            }  
        }  

        private void Form2_FormClosing(object sender, FormClosingEventArgs e)  
        {  
            if (videoCaptureDevice.IsRunning == true)  
                videoCaptureDevice.Stop();  
        }  


    }  
}

And here's the form3 that i want to transfer the frame.

I haven't write anything yet in the form2 because I couldn't send the frame.
How can I achieve that?

Jack J Jun 25,296 Reputation points

2021-09-02T07:29:43.423+00:00

@Ezgi Ecevit , Since this problem is related to AForge, it is a 3rd party product. I recommend that you could ask the question in the Stack Overflow.
Ezgi Ecevit 106 Reputation points

2021-09-02T08:23:03.537+00:00

I asked there but I couldn't get the exact answer. However, I solved the problem and I'll share it here so that people can see. Thanks for your concern.

Accepted answer

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Your answer

Jack J Jun 25,296 Reputation points

2021-09-02T07:29:43.423+00:00

@Ezgi Ecevit , Since this problem is related to AForge, it is a 3rd party product. I recommend that you could ask the question in the Stack Overflow.
Ezgi Ecevit 106 Reputation points

2021-09-02T08:23:03.537+00:00

I asked there but I couldn't get the exact answer. However, I solved the problem and I'll share it here so that people can see. Thanks for your concern.

Answer 1

Form2 Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using AForge.Video;
using AForge.Video.DirectShow;


namespace MUI
{
    public partial class Form2 : Form
    {


        public Form2()
        {
            InitializeComponent();
        }

        FilterInfoCollection filterInfoCollection;
        VideoCaptureDevice videoCaptureDevice;





        public void videoCaptureDevice_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            Form3 f3 = new Form3();
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
            f3.pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Form3 f3 = new Form3();
            videoCaptureDevice = new VideoCaptureDevice(filterInfoCollection[comboBox1.SelectedIndex].MonikerString);
            videoCaptureDevice.NewFrame += videoCaptureDevice_NewFrame;
            videoCaptureDevice.NewFrame += f3.videoCaptureDevice_NewFrame;
            videoCaptureDevice.Start();

            f3.Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {

            videoCaptureDevice.Stop();
            pictureBox1.Image = null;
            this.Close();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            videoCaptureDevice.Stop();
            pictureBox1.Image = null;
        }

        public void Form2_Load(object sender, EventArgs e)
        {

            filterInfoCollection = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            foreach (FilterInfo filterInfo in filterInfoCollection)
            {
                comboBox1.Items.Add(filterInfo.Name);
            }
            comboBox1.SelectedIndex = 0;
            videoCaptureDevice = new VideoCaptureDevice();

        }

        private void Form2_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (videoCaptureDevice.IsRunning == true)
                videoCaptureDevice.Stop();
        }


    }
}

Form3 Code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using AForge.Video;

namespace MUI
{

    public partial class Form3 : Form
    {

        public Form3()
        {
            InitializeComponent();
        }



        private void Form3_Load(object sender, EventArgs e)
        {
        }

        public void videoCaptureDevice_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
        }



        private void button1_Click(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            this.Close();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            this.Close();
        }
    }
}

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Real-time frame of webcam capture transfer between forms in winforms

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