select a random link from google

Question

I Have an application that has a text box and a button and when you click the button it open up Ie and Google and searches for what was typed into the text box. but i need it to than select a random link from the generated results every time. Anyone know how to do this? Here is the code i have so far 

namespace Search

{

    /// <summary>

    /// Interaction logic for MainWindow.xaml

    /// </summary>

    public partial class MainWindow : Window

    {

        public MainWindow()

        {

            InitializeComponent();

        }

        private void Btn_Click(object sender, RoutedEventArgs e)

        {

            using (var browser = new IE("http://www.google.com"))

            {

                browser.TextField(Find.ByName("q")).TypeText(_textBox.Text);

                browser.Button(Find.ByName("btnG")).Click();

                browser.WaitForComplete(5000);

                System.Windows.Forms.SendKeys.SendWait("{Enter}"); // presses search on the second screen

                browser.Button(Find.ById("gbqfb")/*.ByName("btnG")*/).Click(); // doesn't work

                

                

              

            }

        }

    }

}