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PortfolioManager/ViewModels/PlotterWorkspaceViewModel.cs

@@ -0,0 +1,21 @@
+using System;
+using ScottPlot.Avalonia;
+
+namespace PortfolioManager.ViewModels
+{
+    public class PlotterLoadedEventArgs : EventArgs
+    {
+        public AvaPlot AvaPlot { get; set; } = default;
+    }
+    
+    public abstract class PlotterWorkspaceViewModel : WorkspaceViewModel
+    {
+        public EventHandler<PlotterLoadedEventArgs> OnPlotterLoadedEventHandler;
+
+        public void OnPlotterLoaded(AvaPlot avaPlot)
+        {
+            EventHandler<PlotterLoadedEventArgs> handler = this.OnPlotterLoadedEventHandler;
+            if (null != handler) handler(this, new PlotterLoadedEventArgs() { AvaPlot = avaPlot });
+        }
+    }
+}

PortfolioManager/ViewModels/ScottPlotViewModel.cs

@@ -1,26 +1,47 @@
+using System;
+using MarketData.DataAccess;
+using MarketData.MarketDataModel;
 using ScottPlot.Avalonia;
+using ScottPlot.Plottables;
+using ShimSkiaSharp;
+using SkiaSharp;
 
 namespace PortfolioManager.ViewModels
 {
-    public partial class ScottPlotViewModel : WorkspaceViewModel
+
+
+
+    public partial class ScottPlotViewModel : PlotterWorkspaceViewModel
     {
+        private AvaPlot plotter = default;
         public ScottPlotViewModel()
         {
-            double[] dataX = { 1, 2, 3, 4, 5 };
-            double[] dataY = { 1, 4, 9, 16, 25 };
-
-        // AvaPlot avaPlot = this.Find<AvaPlot>("AvaPlot");
-        // ((ScottPlotViewModel)DataContext).Plotter = avaPlot;   
-
-
-            if (Plotter != null)
-            {
-                Plotter.Plot.Add.Scatter(dataX, dataY);
-                Plotter.Refresh();
-            }
+            OnPlotterLoadedEventHandler += PlotterLoadedEvent;
         }
 
+        public void PlotterLoadedEvent(object sender, PlotterLoadedEventArgs e)
+        {
+            Prices prices = PricingDA.GetPrices("SPY", 180);
+            DateTime[] dates = new DateTime[prices.Count];
+            double[] closes = new double[prices.Count];
 
+            for (int index = 0; index < prices.Count; index++)
+            {
+                dates[index] = prices[index].Date;
+                closes[index] = prices[index].Close;
+            }
+
+
+            plotter = e.AvaPlot;
+            // double[] dataX = { 1, 2, 3, 4, 5 };
+            // double[] dataY = { 1, 4, 9, 16, 25 };
+            //            plotter.Plot.Add.Scatter(dataX, dataY);
+            Scatter closeScatter = plotter.Plot.Add.ScatterLine(dates, closes, ScottPlot.Color.FromSKColor(SKColors.Red));
+            closeScatter.LegendText = "Close";
+            closeScatter.LineWidth = 3;
+            plotter.Plot.Axes.AutoScale();
+            plotter.Refresh();
+        }
         // ********************************************** P E R S I S T E N C E *************************
         public override bool CanPersist()
         {
@@ -35,10 +56,5 @@ namespace PortfolioManager.ViewModels
         public override void SetSaveParameters(SaveParameters saveParameters)
         {
         }
-
-        // **********************************************************************************************        
-
-        public AvaPlot Plotter { get; set; } = default;
-
     }
 }

PortfolioManager/Views/ScottPlotView.axaml

@@ -11,5 +11,5 @@
              mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
              x:DataType="vm:ScottPlotViewModel"
              x:Class="PortfolioManager.Views.ScottPlotView">
-  <ScottPlot:AvaPlot Name="AvaPlot"/>
+  <ScottPlot:AvaPlot Name="AvaPlot" Loaded="AvaPlot_Loaded"/>
 </UserControl>

PortfolioManager/Views/ScottPlotView.axaml.cs

@@ -10,16 +10,22 @@ namespace PortfolioManager.Views;
 
 public partial class ScottPlotView : UserControl
 {
+    private AvaPlot avaPlot = default;
     public ScottPlotView()
     {
         InitializeComponent();
-        AvaPlot avaPlot = this.Find<AvaPlot>("AvaPlot");
-        avaPlot.Loaded += OnLoadedEvent(this, null);
     }
 
-    protected void OnLoadedEvent(object sender, EventArgs args)
+    private void AvaPlot_Loaded(object sender, RoutedEventArgs e)
     {
-        // if (null == tabControl) return;
-        // tabControl.SelectedIndex = args.Index;
+        // This code will execute when the AvaPlot is loaded
+        if (sender is ScottPlot.Avalonia.AvaPlot)
+        {
+          if (default == avaPlot)
+          {
+              PlotterWorkspaceViewModel viewModel = (DataContext as PlotterWorkspaceViewModel);
+              viewModel.OnPlotterLoaded(this.Find<AvaPlot>("AvaPlot"));
+          }                
+        }
     }
 }