Aardvark Silverlight app under test - C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.VisualStudio.TestTools.UITest.Extension.SilverlightUIAutomationHelper;

namespace SmallSL01
{
    public partial class MainPage : UserControl
    {
        public MainPage()
        {
            InitializeComponent();
        }

        private void Button_Click(object sender, RoutedEventArgs e)
        {
            DoAddition(Calc1, Calc2);

        }

        private void DoAddition(TextBox tb1, TextBox tb2)
        {
            int temp1, temp2;
            System.Int32.TryParse(tb1.Text, out temp1);
            System.Int32.TryParse(tb2.Text, out temp2);

            TheAnswer.Text = (temp1 + temp2).ToString();
        }
    }
}