This example conditionally hides series labels of charts. Handle the ChartControl.CustomDrawSeriesPoint event and change the e.LabelText parameter's value.
The example hides all point's labels except the last one:
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Example Code
Form1.cs(vb)
C#using System;
using System.Windows.Forms;
using DevExpress.XtraCharts;
using DevExpress.XtraCharts.Designer;
using System.Linq;
namespace ConditionallyHideSeriesLabels {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
// This line of code is generated by Data Source Configuration Wizard
// Create a new DataSet
System.Data.DataSet xmlDataSet = new System.Data.DataSet(@"XML DataSet");
// Load the XML document to the DataSet
xmlDataSet.ReadXml(@"Data\GDPofG7.xml");
// This line of code is generated by Data Source Configuration Wizard
chartControl1.DataSource = xmlDataSet.Tables[@"GDP"];
chartControl1.SeriesTemplate.ArgumentDataMember = @"Year";
chartControl1.SeriesTemplate.ValueDataMembers.AddRange(@"Product");
}
private void chartControl1_CustomDrawSeriesPoint(object sender, CustomDrawSeriesPointEventArgs e) {
// Hide all point's labels except the last one.
var test = e.Series.Points.Max(p => p.ArgumentX.NumericalArgument);
if(!e.Series.Points.Max(p => p.ArgumentX.NumericalArgument).Equals(e.SeriesPoint.NumericalArgument)) {
e.LabelText = "";
}
}
}
}