i m trying to navigate the url on browser after email sent , but its not navigating on website after email sent

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C#

Windows

here is my code

private void btnSubmit_Click(object sender, RoutedEventArgs e)
        {


            EmailComposeTask emailComposeTask = new EmailComposeTask();

            emailComposeTask.Subject = "message subject";
            emailComposeTask.Body = "Name:" + txtName.Text + "\n"
                + "Firm Name: " + txtFirmName.Text + "\n"
                 + "Contact No.: " + txtContactNo.Text + "\n"
                  + "Address: " + txtAddress.Text + "\n"
                   + "City: " + txtCity.Text + "\n"
                    + "PinCode: " + txtPincode.Text + "\n"
                     + "State: " + txtState.Text + "\n"
                      + "EmailId: " + txtEmailId.Text + "\n"
                      + "Website: " + txtWebsite.Text + "\n"; 
            emailComposeTask.To = "example@gmail.com";
            emailComposeTask.Show();

           
            WebBrowserTask webBrowserTask = new WebBrowserTask();
            webBrowserTask.URL = "http://www.abc.in";
            webBrowserTask.Show();
}

i have downloaded windows phone sdk package and trying to send email ,there is no issue to send email but after email sent its not navigating on a website or url which i m trying to show on a browser