Spread ASP.NET 15
FarPoint.Web.Chart Assembly / FarPoint.Web.Chart Namespace / PiePlotArea Class / HoleSize Property
Example


In This Topic
    HoleSize Property
    In This Topic
    Gets or sets the size of the hole in the middle of the pie.
    Syntax
    '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;}
    Exceptions
    ExceptionDescription
    value is less than zero or is greater than or equal to one.
    Remarks
    Hole size is measured relative to the pie radius (0 = no hole, 1 = full pie radius).
    Example
    This example creates an exploded doughnut chart.
    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);
    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)
    See Also