Как использовать TabControl в качестве вкладок самописного браузера

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;
 
namespace Rozego_2._0
{
    public partial class browser : Form
    {
        public browser()
        {
            InitializeComponent();
        }
 
        private void Button5_Click(object sender, EventArgs e)
        {
            webBrowser1.Navigate(ComboBox1.Text);
        }
 
        private void Button1_Click(object sender, EventArgs e)
        {
            webBrowser1.GoBack();
        }
 
        private void Button2_Click(object sender, EventArgs e)
        {
            webBrowser1.GoForward();
        }
 
        private void Button3_Click(object sender, EventArgs e)
        {
            webBrowser1.Refresh();
        }
 
        private void Button4_Click(object sender, EventArgs e)
        {
            webBrowser1.Stop();
        }
 
        private void Button6_Click(object sender, EventArgs e)
        {
            webBrowser1.GoHome();
        }
 
        private void webBrowser1_DocumentCompleted(object sender, WebBrowserDocumentCompletedEventArgs e)
        {
            Form1.tabcontol1.selectedTab.Text = webBrowser1.DocumentTitle;
        }
 
        private void webBrowser1_ProgressChanged(object sender, WebBrowserProgressChangedEventArgs e)
        {
            toolStripProgressBar1.Maximum = (int)e.MaximumProgress;
            toolStripProgressBar1.Value = (int)e.CurrentProgress;
            toolStripStatusLabel1.Text = webBrowser1.StatusText;
        }
    }
}

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;
 
 
namespace Rozego_2._0
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }
 
        private void tabPage1_Click(object sender, EventArgs e)
        {
 
        }
 
        private void tabControl1_Click(object sender, EventArgs e)
        {
 
        }
    }
}

Form1 main = this.Owner as Form1;
            main.tabControl1.SelectedTab.Text = webBrowser1.DocumentTitle;
            WebRequest web_request = (HttpWebRequest)System.Net.WebRequest.Create("http://" + webBrowser1.Document.Url.Host.ToString() + "/favicon.ico");
            System.Net.HttpWebResponse web_response = (HttpWebResponse)web_request.GetResponse();
            System.IO.Stream web_stream = web_response.GetResponseStream();
            Image image = Image.FromStream(web_stream);
            main.imageList1.Images.Add(image);
            main.tabControl1.SelectedTab.ImageIndex = main.imageList1.Images.Count - 1;

Form1 main = this.Owner as Form1;

browser browser_web = new browser();
            browser_web.Owner = this;

WebBrowser web = new WebBrowser();
        web.TopLevel = false;
        web.Visible = true;
        web.Dock = DockStyle.Fill;
        tabControl1.SelectedTab.Controls.Add(web);

web.Owner = this;