Public Sub Add( _
   ByVal item As Double _
) 

Dim instance As DoubleCollection
Dim item As Double
 
instance.Add(item)

public void Add( 
   double item
)

FarPoint.Win.Chart.AreaSeries aseries = new FarPoint.Win.Chart.AreaSeries();
aseries.SeriesName = "Series1";
aseries.Values.Add(2);
aseries.Values.Add(4);
aseries.Values.Add(3);
aseries.Values.Add(5);
aseries.AreaFill = new FarPoint.Win.Chart.GradientFill(Color.Azure, Color.Bisque);
FarPoint.Win.Chart.AreaSeries aseries1 = new FarPoint.Win.Chart.AreaSeries();
aseries1.SeriesName = "Series2";
aseries1.Values.Add(1);
aseries1.Values.Add(2);
aseries1.Values.Add(4);
aseries1.Values.Add(8);
aseries1.AreaFill = new FarPoint.Win.Chart.GradientFill(Color.Azure, Color.Bisque);
aseries.AreaBorder = new FarPoint.Win.Chart.SolidLine(Color.Blue);
FarPoint.Win.Chart.YPlotArea plotArea = new FarPoint.Win.Chart.YPlotArea();
plotArea.Location = new PointF(0.2F, 0.2F);
plotArea.Size = new SizeF(0.6F, 0.6F);
plotArea.Series.Add(aseries);
plotArea.Series.Add(aseries1);
FarPoint.Win.Chart.LabelArea Label = new FarPoint.Win.Chart.LabelArea();
Label.Text = "Area Chart";
Label.Location = new PointF(0.5F, 0.02F);
FarPoint.Win.Chart.LegendArea legend = new FarPoint.Win.Chart.LegendArea();
legend.Location = new PointF(0.80F, 0.5F);
FarPoint.Win.Chart.ChartModel model = new FarPoint.Win.Chart.ChartModel();
model.LabelAreas.Add(Label);
model.LegendAreas.Add(legend);
model.PlotAreas.Add(plotArea);
fpChart1.Model = model;

Dim aseries As New FarPoint.Win.Chart.AreaSeries
aseries.SeriesName = "Series1"
aseries.Values.Add(2.0)
aseries.Values.Add(4.0)
aseries.Values.Add(3.0)
aseries.Values.Add(5.0)
aseries.AreaFill = New FarPoint.Win.Chart.GradientFill(Color.Azure, Color.Bisque)


Dim aseries1 As New FarPoint.Win.Chart.AreaSeries
aseries1.SeriesName = "Series2"
aseries1.Values.Add(1.0)
aseries1.Values.Add(2.0)
aseries1.Values.Add(4.0)
aseries1.Values.Add(8.0)
aseries1.AreaFill = New FarPoint.Win.Chart.GradientFill(Color.Azure, Color.Bisque)
aseries.AreaBorder = New FarPoint.Win.Chart.SolidLine(Color.Blue)

Dim plotArea As New FarPoint.Win.Chart.YPlotArea()
plotArea.Location = New PointF(0.2F, 0.2F)
plotArea.Size = New SizeF(0.6F, 0.6F)
plotArea.series.Add(aseries)
plotArea.series.Add(aseries1)

Dim Label As New FarPoint.Win.Chart.LabelArea()
Label.Text = "Area Chart"
Label.Location = New PointF(0.5F, 0.02F)
Label.AlignmentX = 0.5F
Label.AlignmentY = 0.0F

Dim legend As New FarPoint.Win.Chart.LegendArea()
legend.Location = New PointF(0.98F, 0.5F)
legend.AlignmentX = 1.0F
legend.AlignmentY = 0.5F

Dim model As New FarPoint.Win.Chart.ChartModel()
model.LabelAreas.Add(Label)
model.LegendAreas.Add(legend)
model.PlotAreas.Add(plotArea)

FpChart1.Model = model