Arduino, C#, and Serial Interface

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading;
using System.Threading.Tasks;
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;
using ChartPainter3D;

namespace Arduino_SerialInterface
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        /// <summary>
        /// Contains a collection of <see cref="WeatherDataItem"/>
        /// and control methods to send commands to the Arduino Board
        /// </summary>
        WeatherDataContainer weatherData = new WeatherDataContainer();
        /// <summary>
        /// Constructor
        /// </summary>
        public MainWindow()
        {
            weatherData.NewWeatherDataReceived += weatherData_NewWeatherDataReceived;
            InitializeComponent();
            try
            {
                weatherData.OpenArduinoConnection();
            }
            catch (Exception)
            {
                MessageBox.Show("Error: Can not connect to the Arduino Board - Configure the COM Port in the app.config file and check whether an Arduino Board is connected to your computer.");
            }
        }
        /// <summary>
        /// OnWeatherDataReceived event is catched in
        /// order to update the weather data display on the form
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        void weatherData_NewWeatherDataReceived(object sender, EventArgs e)
        {
            Dispatcher.BeginInvoke(new ThreadStart(DrawChart));
            Dispatcher.BeginInvoke(new ThreadStart(() =>
                weatherDataGrid.ItemsSource = weatherData.WeatherDataItems));

        }
        /// <summary>
        /// Click-Event for the Button to get weather data
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void getWeatherData_Click(object sender, RoutedEventArgs e)
        {
            weatherData.GetWeatherDataFromArduinoBoard();
        }

        private void DrawChart()
        {
            List<double> temparatures = new List<double>();
            List<string> captions = new List<string>();
            foreach (WeatherDataItem item in weatherData.WeatherDataItems)
            {
                temparatures.Add(item.TemparatureCelsius);
                captions.Add(string.Format("{0}\n{1} C", item.Date.ToShortDateString(), item.TemparatureCelsius.ToString()));
            }
            ChartDataContainer container = new ChartDataContainer();
            container.Data = temparatures;
            container.DataCaptions = captions;
            container.MaxSize = new Point(800, 300);
            container.XAxisText = "Date / Temparature (Celsius)";
            container.YAxisText = "";
            container.Offset = new Point(20, 20);
            container.ChartElementColor = Colors.BurlyWood;
            CylinderChartPainter.DrawChart(container, weatherChartCanvas);
        }
    }
}