HoleSize Property

Visual Basic
C#

'Declaration
 
Public Property HoleSize As Single

'Usage
 
Dim instance As PiePlotArea
Dim value As Single
 
instance.HoleSize = value
 
value = instance.HoleSize

public float HoleSize {get; set;}

Exception	Description
System.ArgumentOutOfRangeException	value is less than zero or is greater than or equal to one.

Hole size is measured relative to the pie radius (0 = no hole, 1 = full pie radius).

This example creates an exploded doughnut chart.

C#

PieSeries series = new PieSeries();
series.SeriesName = "Series 0";
series.Values.Add(1.0);
series.Values.Add(2.0);
series.Values.Add(4.0);
series.Values.Add(8.0);
series.CategoryNames.Add("alpha");
series.CategoryNames.Add("beta");
series.CategoryNames.Add("gamma");
series.CategoryNames.Add("delta");
series.PieDetachments.Add(0.5f);
PiePlotArea plotArea = new PiePlotArea();
plotArea.Location = new PointF(0.2f, 0.2f);
plotArea.Size = new SizeF(0.6f, 0.6f);
plotArea.HoleSize = 0.5;
plotArea.Elevation = 15;
plotArea.Rotation = 20;
plotArea.Series.Add(series);
LabelArea label = new LabelArea();
label.Text = "Exploded Pie Chart";
label.Location = new PointF(0.5f, 0.02f);
label.AlignmentX = 0.5f;
label.AlignmentY = 0.0f;
LegendArea legend = new LegendArea();
legend.Location = new PointF(0.98f, 0.5f);
legend.AlignmentX = 1.0f;
legend.AlignmentY = 0.5f;
ChartModel model = new ChartModel();
model.LabelAreas.Add(label);
model.LegendAreas.Add(legend);
model.PlotAreas.Add(plotArea);
FarPoint.Web.Spread.Chart.SpreadChart chart = new FarPoint.Web.Spread.Chart.SpreadChart();
chart.Model = model;
chart.ViewType = FarPoint.Web.Chart.ChartViewType.View3D
FpSpread1.Sheets[0].Charts.Add(chart);

Visual Basic

Dim series As New FarPoint.Web.Chart.PieSeries()
series.SeriesName = "Series 0"
series.Values.Add(1.0)
series.Values.Add(2.0)
series.Values.Add(4.0)
series.Values.Add(8.0)
series.CategoryNames.Add("alpha")
series.CategoryNames.Add("beta")
series.CategoryNames.Add("gamma")
series.CategoryNames.Add("delta")
series.PieDetachments.Add(0.5F)
Dim plotArea As New FarPoint.Web.Chart.PiePlotArea()
plotArea.Location = New System.Drawing.PointF(0.2F, 0.2F)
plotArea.Size = New System.Drawing.SizeF(0.6F, 0.6F)
plotArea.HoleSize = 0.5
plotArea.Elevation = 15
plotArea.Rotation = 20
plotArea.Series.Add(series)
Dim label As New FarPoint.Web.Chart.LabelArea()
label.Text = "Exploded Doughnut Chart"
label.Location = New System.Drawing.PointF(0.5F, 0.02F)
label.AlignmentX = 0.5F
label.AlignmentY = 0.0F
Dim legend As New FarPoint.Web.Chart.LegendArea()
legend.Location = New System.Drawing.PointF(0.98F, 0.5F)
legend.AlignmentX = 1.0F
legend.AlignmentY = 0.5F
Dim model As New FarPoint.Web.Chart.ChartModel()
model.LabelAreas.Add(label)
model.LegendAreas.Add(legend)
model.PlotAreas.Add(plotArea)
Dim chart As New FarPoint.Web.Spread.Chart.SpreadChart()
chart.Model = model
chart.ViewType = FarPoint.Web.Chart.ChartViewType.View3D
FpSpread1.Sheets(0).Charts.Add(chart)

Reference

PiePlotArea Class
PiePlotArea Members