DevExpress之ChartControl实现饼状图百分比演示实例

namespaceDevExpressChart
{
   publicpartialclasswinPieSeriesView:Form
   {
       publicwinPieSeriesView()
       {
           InitializeComponent();
       }
       privateDataTableCreateChartData()
       {
           DataTabletable=newDataTable("Table1");
           table.Columns.Add("Name",typeof(String));
           table.Columns.Add("Value",typeof(Int32));
           table.Rows.Add(newobject[]{"A",10});
           table.Rows.Add(newobject[]{"B",20});
           table.Rows.Add(newobject[]{"C",40});
           table.Rows.Add(newobject[]{"D",20});
           table.Rows.Add(newobject[]{"E",30});
           returntable;
       }
       privatevoidwinPieSeriesView_Load(objectsender,EventArgse)
       {
           BuilderDevChart();
       }
       privatevoidBuilderDevChart()
       {
           Series_pieSeries=newSeries("测试",ViewType.Pie);
           _pieSeries.ValueDataMembers[0]="Value";
           _pieSeries.ArgumentDataMember="Name";
           _pieSeries.DataSource=CreateChartData();
           chartControl1.Series.Add(_pieSeries);
           //----------------------------------------
           _pieSeries.LegendPointOptions.PointView=PointView.ArgumentAndValues;
           _pieSeries.SetPiePercentage();
       }
   }
}

       ///<summary>
       ///饼状Series设置成百分比显示
       ///</summary>
       ///<paramname="series">Series</param>
       publicstaticvoidSetPiePercentage(thisSeriesseries)
       {
           if(series.ViewisPieSeriesView)
           {
               ((PiePointOptions)series.PointOptions).PercentOptions.ValueAsPercent=true;
               ((PiePointOptions)series.PointOptions).ValueNumericOptions.Format=NumericFormat.Percent;
               ((PiePointOptions)series.PointOptions).ValueNumericOptions.Precision=0;
           }
       }