C#教程之DevExpress之饼状图突出（Explode）设置实例

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C#教程之DevExpress之饼状图突出（Explode）设置实例

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：

复制代码代码如下:

/// <summary>
/// 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;
}
}

代码使用：

复制代码代码如下:

private void BuilderDevChart()

{

    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);

}

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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