MainWindow.xaml.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
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 Lego.Ev3.Core;
using Lego.Ev3.Desktop;
using System.Diagnostics;

namespace LegoLogger
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    public partial class MainWindow : Window
    {
        Brick _brick;
        
        public MainWindow()
        {
            InitializeComponent();
        }

        
        // Create a list to hold sensor data
        public List<string> LogList = new List<string>();
        public bool IsLogging = new bool();
        public int LetterCount = new int();
        
        // Stuff that happens when the program is loaded
        private async void Grid_Loaded(object sender, RoutedEventArgs e)
        {
            // Connect to brick via bluetooth
            _brick = new Brick(new BluetoothCommunication("COM3"));
            _brick.BrickChanged += _brick_BrickChanged;
            await _brick.ConnectAsync(TimeSpan.FromMilliseconds(50));
            await _brick.DirectCommand.PlayToneAsync(50, 1000, 300);
            // Add comma seperated titles to list
            LogList.Add("IsWriting,NewLetter,LetterCount,xCoordinate,yCoordinate");
            // Initialise variables
            IsLogging = false;
            LetterCount = 0;
            // Set Sensor to Color Mode
            _brick.Ports[InputPort.Three].SetMode(ColorMode.Color);
        }

        //Stuff that happens every time the sensor values change
        private void _brick_BrickChanged(object sender, BrickChangedEventArgs e)
        {
            var IsWriting = _brick.Ports[InputPort.One].SIValue;
            var NewLetter = _brick.Ports[InputPort.Three].SIValue;
            var xCoordinate = _brick.Ports[InputPort.A].SIValue;
            var yCoordinate = _brick.Ports[InputPort.B].SIValue;
            yCoordinate = yCoordinate * -1;

            // Logic to Control if to save sensor data
            if (IsLogging)
            {
                //create comma seperated list of data
                string LogValues = IsWriting.ToString() + "," + NewLetter.ToString() + "," + LetterCount.ToString() + "," + xCoordinate.ToString() + "," + yCoordinate.ToString();
                //add to list
                LogList.Add(LogValues);

            }
            // Logic to count colour sensor interactions
            if (NewLetter>=1)
            {
                LetterCount = LetterCount + 1;
            }

            // Update GUI
            GUILetterCount.Content = LetterCount.ToString();
            GUIxCoordinate.Content = xCoordinate.ToString();
            GUIyCoordinate.Content = yCoordinate.ToString();
            GUIIsWriting.Content = IsWriting.ToString();

            // Cursor formatting
            GUICursorV.X1 = 178 + xCoordinate * 3 - 10;
            GUICursorV.X2 = 178 + xCoordinate * 3 + 10;
            GUICursorV.Y1 = 118 - yCoordinate * 3;
            GUICursorV.Y2 = 118 - yCoordinate * 3;
            GUICursorH.X1 = 178 + xCoordinate * 3;
            GUICursorH.X2 = 178 + xCoordinate * 3;
            GUICursorH.Y1 = 118 - yCoordinate * 3 - 10;
            GUICursorH.Y2 = 118 - yCoordinate * 3 + 10;
            
        }
        //action to take on UI button presses
        private void StartLoggingButton_Click(object sender, RoutedEventArgs e)
        {
            IsLogging = true;
        }

        private void StopLoggingButton_Click(object sender, RoutedEventArgs e)
        {
            IsLogging = false;
        }

        private void WriteLogButton_Click(object sender, RoutedEventArgs e)
        {
            try
            {
            //method 1 to write log
            System.IO.File.WriteAllLines(@"C:\EV3\Log.csv", LogList);
            }
            catch (Exception)
            {
                System.Windows.MessageBox.Show("Unable to write to file. Check it is not in use");
                //throw;
            }
            

            //method 2
            //add a carriage return after each string
            //var text = string.Empty;
            //foreach (String s in LogList)
            //{
            //    text += s.ToString() + "\r\n";
            //}
            //display the final list
            //MessageBox.Show(text);

            //System.IO.File.WriteAllText(@"C:\EV3\Log2.csv", text);

        }

        private void ClearLogButton_Click(object sender, RoutedEventArgs e)
        {
            LogList.Clear();
            LogList.Add("IsWriting,NewLetter,LetterCount,xCoordinate,yCoordinate");
        }

        private class GUIText
        {
        }
    }

}