DevExpress ChartControl 第二Y轴刻度, 满足条件 Point 变色

This example demonstrates how secondary axes can be added to a chart at runtime.

C#

VB

using System;
using System.Drawing;
using System.Windows.Forms;
using DevExpress.XtraCharts;
// ... 

private void Form1_Load(object sender, EventArgs e) {
    // Create a new chart. 
    ChartControl chartControl1 = new ChartControl();

    // Create two series. 
    Series series1 = new Series("Series 1", ViewType.Bar);
    Series series2 = new Series("Series 2", ViewType.Line);

    // Add points to them, with their arguments different. 
    series1.Points.Add(new SeriesPoint("A", 10));
    series1.Points.Add(new SeriesPoint("B", 12));
    series1.Points.Add(new SeriesPoint("C", 17));
    series1.Points.Add(new SeriesPoint("D", 14));
    series2.Points.Add(new SeriesPoint("I", 1500));
    series2.Points.Add(new SeriesPoint("II", 1800));
    series2.Points.Add(new SeriesPoint("III", 2500));
    series2.Points.Add(new SeriesPoint("IV", 3300));

    // Add both series to the chart. 
    chartControl1.Series.AddRange(new Series[] { series1, series2 });

    // Hide the legend (optional). 
    chartControl1.Legend.Visible = false;

    // Create two secondary axes, and add them to the chart's Diagram. 
    SecondaryAxisX myAxisX = new SecondaryAxisX("my X-Axis");
    SecondaryAxisY myAxisY = new SecondaryAxisY("my Y-Axis");

    ((XYDiagram)chartControl1.Diagram).SecondaryAxesX.Add(myAxisX);
    ((XYDiagram)chartControl1.Diagram).SecondaryAxesY.Add(myAxisY);

    // Assign the series2 to the created axes. 
    ((LineSeriesView)series2.View).AxisX = myAxisX;
    ((LineSeriesView)series2.View).AxisY = myAxisY;

    // Customize the appearance of the secondary axes (optional). 
    myAxisX.Title.Text = "A Secondary X-Axis";
    myAxisX.Title.Visible = true;
    myAxisX.Title.TextColor = Color.Red;
    myAxisX.Label.TextColor = Color.Red;
    myAxisX.Color = Color.Red;

    myAxisY.Title.Text = "A Secondary Y-Axis";
    myAxisY.Title.Visible = true;
    myAxisY.Title.TextColor = Color.Blue;
    myAxisY.Label.TextColor = Color.Blue;
    myAxisY.Color = Color.Blue;

    // Add the chart to the form. 
    chartControl1.Dock = DockStyle.Fill;
    this.Controls.Add(chartControl1);
}

左侧, 右侧坐标轴

    ((XYDiagram)chartControl1.Diagram).SecondaryAxesY.Clear();//清空之前的右侧坐标, 可以有多个坐标轴
 ((XYDiagram)chartControl1.Diagram).SecondaryAxesY.Add( myAxisY );
((StackedLineSeriesView)workTimeSeries.View).AxisY = ((XYDiagram)chartControl1.Diagram).SecondaryAxesY[0];//右侧坐标轴

鼠标靠近时, 显示 弹出框

 private void CustomDrawCrosshairEventArgs ( CustomDrawCrosshairEventArgs e ) {
         if (e.CrosshairElementGroups.Count == 0) { return; }
         foreach (CrosshairElement element in e.CrosshairElementGroups[0].CrosshairElements) {
             SeriesPoint currentPoint = element.SeriesPoint;
             if (currentPoint.Tag.GetType() == typeof( DataRowView )) {
                 DataRowView rowView = (DataRowView)currentPoint.Tag;
                 string s = rowView[3].ToString();
                 element.LabelElement.Text = s;
             }
         }
} 

满足条件, 修改颜色

private void chartControl1_CustomDrawSeriesPoint ( object sender, DevExpress.XtraCharts.CustomDrawSeriesPointEventArgs e ) {
            ChartHitInfo info = chartControl1.CalcHitInfo( this.chartControl1.PointToClient( MousePosition ) );

            //如果容量为 0 那么为绿色
            //if (e.SeriesPoint.Argument == "A") {
            //    ((PointDrawOptions)e.SeriesDrawOptions).Color = Color.Blue;
            //} else if (e.SeriesPoint.Argument == "B") {
            //    ((PointDrawOptions)e.SeriesDrawOptions).Color = Color.Red;
            //}
            if (e.Series.Name == "数量") {
                ChartControl chartControl = sender as ChartControl;
                List<SeriesPoint> points = chartControl.Series["容量"].Points.Select( x => x as SeriesPoint ).ToList();
                string argumentName = e.SeriesPoint.Argument;   //名称
                double hangerCapacity = points.Where( x => x.Argument == argumentName ).First().Values[0];

                if (hangerCapacity == 0) {
                    //e.SeriesDrawOptions.Color = Color.Black;
                    //e.SeriesPoint.Annotations.AddTextAnnotation( "TextAnnotation" );
                }
            }
        }