Error in making a web-browser control by c# vb.net

I am trying to make WPF by VB.NET 2010 but I have many errors.I am trying to make WPF by VB.NET 2010 but I have many errors.I am trying to make WPF by VB.NET 2010 but I have many errors.I am trying to make WPF by VB.NET 2010 but I have many errors.Can anybody help me please? using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Windows; using System.Windows.Controls; using System.Windows.Data; using System.Windows.Documents; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Imaging; using System.Windows.Navigation; using System.Windows.Shapes; namespace WpfApplication1 { /// /// Interaction logic for MainWindow.xaml /// public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); } private void Window_Loaded(object sender, RoutedEventArgs e) { } private void button1_Click(object sender, RoutedEventArgs e) { if (checkBox1 = checked) (webBrowser1.Navigate("http://localhost:8081/geoserver/web/?wicket:bookmarkablePage=:org.geoserver.web.demo.MapPreviewPage")); } } }