Add series programmatically to an OxyPlot defined in XAML

Question

I'm testing OxyPlot for a project where users can drop datas on a graph.

I try to add series programmatically to an OxyPlot like this, but its not working :

<Grid>
    <oxy:Plot x:Name="TestPlot" Title="" AllowDrop="True">

    </oxy:Plot>
</Grid>

On Drop event function:

        OxyPlot.Series.LineSeries ls = new OxyPlot.Series.LineSeries();
        ls.StrokeThickness = 1;

        OxyPlot.Wpf.Axis Xaxis = new OxyPlot.Wpf.LinearAxis();
        Xaxis.Maximum = 0;
        Xaxis.Minimum = 50;
        Xaxis.Position = OxyPlot.Axes.AxisPosition.Bottom;
        Xaxis.Title = "time";
        TestPlot.Axes.Add(Xaxis);

        OxyPlot.Wpf.Axis Yaxis = new OxyPlot.Wpf.LinearAxis();
        Xaxis.Maximum = 0;
        Xaxis.Minimum = 500;
        Xaxis.Position = OxyPlot.Axes.AxisPosition.Left;
        Xaxis.Title = "Value";
        TestPlot.Axes.Add(Yaxis);

        ls.Points.Add(new DataPoint(0, 1));
        ls.Points.Add(new DataPoint(10, 100));
        ls.Points.Add(new DataPoint(20, 200));
        ls.Points.Add(new DataPoint(30, 300));

        TestPlot.ActualModel.Series.Add(ls);

        TestPlot.InvalidatePlot(true);

But the LineSerie isn't displayed. I'm missing somethind but can't figure out what when I googled this issue...

Thank you for your help.

Answer 1

Using a Plot element you should create a OxyPlot.Wpf.LineSeries and sets its ItemsSource:

OxyPlot.Wpf.LineSeries ls = new OxyPlot.Wpf.LineSeries();
ls.StrokeThickness = 1;
...
List<DataPoint> dataPoints = new List<DataPoint>();
dataPoints.Add(new DataPoint(0, 1));
dataPoints.Add(new DataPoint(10, 100));
dataPoints.Add(new DataPoint(20, 200));
dataPoints.Add(new DataPoint(30, 300));
ls.ItemsSource = dataPoints;

TestPlot.Series.Add(ls);