////////Paste this in anywhere in ur code//////

 public static String GetHtmlStringWC(string url)
        {
            string htmlString = string.Empty;

            try
            {
                using (WebClient webClient = new WebClient())
                {
                    try
                    {
                        webClient.Headers["User-Agent"] = "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.15) Gecko/20110303 Firefox/3.6.15";
                        WebProxy myProxy = new WebProxy();
                        myProxy.IsBypassed(new Uri(url));
                        webClient.Proxy = myProxy;
                        htmlString = webClient.DownloadString(url);
                    }
                    catch (Exception ex)
                    {
                        throw;
                    }
                    finally
                    {
                        webClient.Dispose();
                    }
                }
            }
            catch (WebException wex)
            {
                throw;
            }
            catch (Exception ex)
            {
                throw;
            }
            finally { }

            return htmlString.Replace("\r", string.Empty).Replace("\n", string.Empty).Replace("\t", string.Empty);
        }




//////Then paste this in the form load event (change the pastebin link to ur link)////////


int version = 1;
            string contents = GetHtmlStringWC("https://pastebin.com/raw/9ExFnXLf");

            Console.WriteLine(contents);
            {


                if (version.ToString() != contents)
                {

                    DialogResult result = MessageBox.Show("There is an update found, would you like to update?", "Updates", MessageBoxButtons.YesNo, MessageBoxIcon.Information);
                    if (result == DialogResult.Yes)
                    {
                        Process.Start("https://github.com/nuncahacks/Youtube-Downloader/raw/master/Yotube%20Downloader.exe");
                    }
                    if (result == DialogResult.No)
                    {
                        Application.Exit();
                    }


                    else
                    {

                        MessageBox.Show("No updates found", "Updates", MessageBoxButtons.OK);