Doughnut and Pie Charts

A doughnut chart shows how the percentage of each data item contributes to the total.

Chart Information
# of Y values/data point	1
# of Series	1
Marker Support	Series or Data Point
Custom Properties	ExplodeFactor gets or sets the amount of separation between data point values. HoleSize gets or sets the inner radius of the chart. OutsideLabels gets or sets a value indicating whether the data point labels appear outside the chart. StartAngle gets or sets the horizontal start angle for the series.

In order to show each section of the pie in a different color, the Background property for each data point must be set. Below is an example of setting custom chart properties at run time for a doughnut chart.

' Visual Basic
Me.ChartControl1.Series(0).Properties("ExplodeFactor") = 0.0F
Me.ChartControl1.Series(0).Properties("HoleSize") = 0.25F
Me.ChartControl1.Series(0).Properties("OutsideLabels") = False
Me.ChartControl1.Series(0).Properties("StartAngle") = 0.0F
         
// C#
this.ChartControl1.Series[0].Properties["ExplodeFactor"] = 0f;
this.ChartControl1.Series[0].Properties["HoleSize"] = 0.25f;
this.ChartControl1.Series[0].Properties["OutsideLabels"] = false;
this.ChartControl1.Series[0].Properties["StartAngle"] = 0f;