gistfile1.txt

using System;
using System.Collections.Generic;
using System.ComponentModel;
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 LiveCharts;
using LiveCharts.Wpf;
using System.Globalization;

namespace CurrencyPlayer.Controls
{
    /// <summary>
    /// Interaction logic for CurrencyChart.xaml
    /// </summary>
    public partial class CurrencyChart : UserControl, INotifyPropertyChanged
    {

        public SeriesCollection SeriesCollection { get; set; }
        public string[] Labels { get; set; }
        public Func<double, string> YFormatter { get; set; }
        public List<Currency> CurrencyCollection { get; set; }

        private double _to;
        private double _from;
        private readonly int size = 200;

        public CurrencyChart()
        {
            InitializeComponent();

            From = 0;
            To = size;

            CurrencyChartCtrl.Zoom = ZoomingOptions.X;


            CurrencyChartCtrl.AxisX.Add(new Axis
            {
                Separator = new LiveCharts.Wpf.Separator
                {
                    Step = 0.00001,
                    IsEnabled = false
                }
            });

            CurrencyCollection = new List<Currency>
            {
                new Currency
                {
                    Rate = 4.1,
                    Date = DateTime.Now.ToLongTimeString(),
                    Action = CurrencyAction.None
                },
                new Currency
                {
                    Rate = 4.1,
                    Date = DateTime.Now.AddMinutes(1).ToLongTimeString(),
                    Action = CurrencyAction.Bought
                },
                new Currency
                {
                    Rate = 4.1,
                    Date = DateTime.Now.AddMinutes(2).ToLongTimeString(),
                    Action = CurrencyAction.Sold
                },
                new Currency
                {
                    Rate = 4.1,
                    Date = DateTime.Now.AddMinutes(3).ToLongTimeString(),
                    Action = CurrencyAction.None
                }

            };

            //CurrencyCollection = CurrencyCollection.Take<Currency>(400).ToList();



            ChartValues<double> values = new ChartValues<double>();

            SectionsCollection MySections = new SectionsCollection();

            VisualElementsCollection vElements = new VisualElementsCollection();


            int x = 0;
            foreach (Currency c in CurrencyCollection)
            {
                values.Add(c.Rate);

                if (c.Action != CurrencyAction.None)
                {
                    if (c.Action == CurrencyAction.Bought)
                    {
                        AxisSection section = new AxisSection
                        {
                            Value = c.Rate,
                            Label = c.Date,
                            StrokeThickness = 3,
                            Visibility = Visibility.Visible,
                            Stroke = c.Action == CurrencyAction.Bought ? new SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 0, 0)) : new SolidColorBrush(System.Windows.Media.Color.FromRgb(0, 255, 0))
                        };

                        VisualElement vElement = new VisualElement
                        {
                            X = x,
                            Y = c.Rate,
                            VerticalAlignment = VerticalAlignment.Center,
                            HorizontalAlignment = HorizontalAlignment.Center,
                            Visibility = Visibility.Visible,
                            UIElement = new Line
                            {
                                Width = 2,
                                Visibility = Visibility.Visible,
                                Stroke = c.Action == CurrencyAction.Bought ? new SolidColorBrush(System.Windows.Media.Color.FromRgb(255, 0, 0)) : new SolidColorBrush(System.Windows.Media.Color.FromRgb(0, 255, 0))
                            }

                        };

                        MySections.Add(section);
                        vElements.Add(vElement);
                    }

                }

                x++;
            }

            SeriesCollection = new SeriesCollection
            {
                new LineSeries
                {
                    Title = "Currency Rate",
                    Values = values
                }
            };


            CurrencyChartCtrl.VisualElements.Add(new VisualElement
            {
                X = 4,
                Y = 4,
                HorizontalAlignment = HorizontalAlignment.Center,
                VerticalAlignment = VerticalAlignment.Top,
                UIElement = new TextBlock //notice this property must be a wpf control
                {
                    Text = "Warning!",
                    FontWeight = FontWeights.Bold,
                    FontSize = 16,
                    Opacity = 0.6
                }
            });

            CurrencyChartCtrl.VisualElements = vElements;


            CurrencyChartCtrl.AxisX.Add(new Axis
            {
                Sections = MySections,
                IsEnabled = true,
                Visibility = Visibility.Visible
            });




            Labels = CurrencyCollection.Select(c => c.Date).ToArray();
            YFormatter = value => value.ToString();

            DataContext = this;
        }

        public double From
        {
            get { return _from; }
            set
            {
                _from = value;
                OnPropertyChanged("From");
            }
        }

        public double To
        {
            get { return _to; }
            set
            {
                _to = value;
                OnPropertyChanged("To");
            }
        }

        public event PropertyChangedEventHandler PropertyChanged;

        protected virtual void OnPropertyChanged(string propertyName = null)
        {
            if (PropertyChanged != null)
                PropertyChanged.Invoke(this, new PropertyChangedEventArgs(propertyName));
        }

        private void NextOnClick(object sender, RoutedEventArgs e)
        {
            From += size;
            To += size;
        }

        private void PrevOnClick(object sender, RoutedEventArgs e)
        {
            From -= size;
            To -= size;
        }

        private void ManualZoom(object sender, RoutedEventArgs e)
        {
            //you only need to change the axis limits to zoom in/out any axis.
            From = 5;
            To = 10;
        }

        public void LoadData()
        {
            
        }

        private void ClearZoom()
        {
            //to clear the current zoom/pan just set the axis limits to double.NaN

            CurrencyChartCtrl.AxisX[0].MinValue = double.NaN;
            CurrencyChartCtrl.AxisX[0].MaxValue = double.NaN;
            CurrencyChartCtrl.AxisY[0].MinValue = double.NaN;
            CurrencyChartCtrl.AxisY[0].MaxValue = double.NaN;
        }
    }
}