本文实例讲述了DevExpress之饼状图突出（Explode）设置方法，分享给大家供大家参考。具体实现方法如下：
关键代码如下：
/// 饼状图突出设置
/// </summary>
/// <param name="chart">ChartControl</param>
/// <param name="pieSeries">Series【仅仅适用于PieSeriesView】</param>
/// <param name="explodeMode">突出模式【枚举】</param>
/// <param name="explodedValue">突出间距</param>
/// <param name="dragPie">是否可以拖动突出饼状</param>
public static void SetPieExplode(this ChartControl chart, Series pieSeries, PieExplodeMode explodeMode, int explodedValue, bool dragPie)
{
if (pieSeries.View is PieSeriesView)
{
//bool _hitTesting = chart.RuntimeHitTesting;
if (!chart.RuntimeHitTesting)
chart.RuntimeHitTesting = true;
PieSeriesView _pieView = pieSeries.View as PieSeriesView;
_pieView.ExplodeMode = explodeMode;
_pieView.ExplodedDistancePercentage = explodedValue;
_pieView.RuntimeExploding = dragPie;
// chart.RuntimeHitTesting = _hitTesting;
}
}</div>
代码使用：
{
Series _pieSeries = new Series("Series 1", ViewType.Pie);
_pieSeries.ValueDataMembers[0] = "Value";
_pieSeries.ArgumentDataMember = "Name";
_pieSeries.DataSource = CreateChartData();
chartControl1.Series.Add(_pieSeries);
//----------------------------------------
_pieSeries.LegendPointOptions.PointView = PointView.ArgumentAndValues;
_pieSeries.SetPiePercentage(NumericFormat.Percent, PointView.ArgumentAndValues);
chartControl1.SetAxisXTitle("test", Color.Red);
_pieSeries.SetLablePosition(PieSeriesLabelPosition.TwoColumns);
chartControl1.SetPieExplode(_pieSeries, PieExplodeMode.MinValue, 5, true);
}</div>
运行效果如下图所示：
希望本文所述对大家的C#程序设计有所帮助。
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