public static void ShowWebpage(string url)
 {
     if (string.IsNullOrEmpty(url))
     {
         MessageBox.Show("Page is not available.", "Warning", MessageBoxButton.OK, MessageBoxImage.Warning);
     }
     else
     {
         if (Properties.Settings.Default.UseDefaultBrowser)
         {
             Process.Start(url);
         }
         else
         {
             var browser = new BuiltinBrowser(url);
             browser.Show();
         }
     }
 }
 private void MainForm_Load(object sender, EventArgs e)
 {
     BuiltinBrowser.DocumentTitleChanged += BuiltinBrowser_DocumentTitleChanged;
     BuiltinBrowser.ObjectForScripting    = new Shell(this);
     BuiltinBrowser.Navigate(Program.BaseURL);
 }