How to record the screen using Asp.net

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ASP.NET

I am doing web application where I need to record the screen and save it. Is there any software to add in project because I referred many of the links but nothing helped me .This is the link which suits me better but I don't know to use it in my project.

The code from the link is

public partial class Form1 : Form
   {
       public Form1()
       {
           InitializeComponent();
       }
       Bitmap bmp;
       Graphics gr;

       private void btn_start_Click(object sender, EventArgs e)
       {
           timer1.Start();
       }

       private void btn_stop_Click(object sender, EventArgs e)
       {
           timer1.Stop();
       }

       private void timer1_Tick(object sender, EventArgs e)
       {
           bmp = new Bitmap(Screen.PrimaryScreen.WorkingArea.Width,
                            Screen.PrimaryScreen.WorkingArea.Height);
           gr = Graphics.FromImage(bmp);
           gr.CopyFromScreen(0, 0, 0, 0, new Size(bmp.Width, bmp.Height));
           pictureBox1.Image = bmp;
           pictureBox1.SizeMode = PictureBoxSizeMode.StretchImage;
       }
   }

After creating a class and adding the code to it how to call the class? Please guide me step by step of what to do and how to add the above code in my project .Thanks in advance !!