ChartHitInfo.CustomAxisLabel Property
Gets a custom axis label which is located under the test point.
Namespace: DevExpress.Xpf.Charts
Assembly: DevExpress.Xpf.Charts.v24.2.dll
NuGet Package: DevExpress.Wpf.Charts
#Declaration
public CustomAxisLabel CustomAxisLabel { get; }
#Property Value
Type | Description |
---|---|
Custom |
A Custom |
#Remarks
Use the CustomAxisLabel property to access the custom axis label located under the test point (if the HitInfoBase.InAxisLabel property returns true).
And, if HitInfoBase.InAxisLabel is false, the CustomAxisLabel property returns null (Nothing in Visual Basic).
#Example
This example demonstrates how to calculate the hit information for the chart element over which the mouse pointer is hovering.
To accomplish this, handle the ChartControl.MouseMove event, obtain the current chart element via the ChartControl.CalcHitInfo method, and if the element is not null (Nothing in Visual Basic), display its information.
using System.Windows;
using System.Windows.Input;
using DevExpress.Xpf.Charts;
using System.Text;
namespace DetermineHoveredChartElement
{
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void chartControl1_MouseMove(object sender, MouseEventArgs e)
{
// Obtain hit information under the test point.
ChartHitInfo hitInfo = chartControl1.CalcHitInfo(e.GetPosition(chartControl1));
StringBuilder builder = new StringBuilder();
// Check whether the chart element is under the test point and if so - obtain the element's content.
if (hitInfo.InDiagram)
builder.AppendLine("In diagram");
if (hitInfo.InAxis)
builder.AppendLine("In axis:" + hitInfo.Axis.Name);
if (hitInfo.AxisLabel != null)
builder.AppendLine("Axis Label:\n" + hitInfo.AxisLabel.Name);
if (hitInfo.AxisTitle != null)
builder.AppendLine("Axis title:\n" + hitInfo.AxisTitle.Content);
if (hitInfo.InTitle)
builder.AppendLine("In chart title:\n " + hitInfo.Title.Content);
if (hitInfo.InLegend)
builder.AppendLine("In legend");
if (hitInfo.InSeries)
builder.AppendLine("In series: " + hitInfo.Series.Name);
if (hitInfo.InSeriesLabel)
{
builder.AppendLine("In series label");
builder.AppendLine("Series Label:" + hitInfo.SeriesLabel.Name);
}
if (hitInfo.InSeriesPoint)
{
builder.AppendLine("Argument: " + hitInfo.SeriesPoint.Argument);
builder.AppendLine("Value: " + hitInfo.SeriesPoint.Value);
}
// Show hit-testing results
if (builder.Length > 0)
text1.Content = string.Format("Hit-testing results:\n" + builder.ToString());
else
text1.Content = "Move the mouse\n pointer over\n the chart to see\n information on\n hovered chart\n elements.";
}
}
}