AxisScaleChangedEventArgs.Axis Property

Returns the axis whose scale mode, measure unit, grid alignment or grid spacing has been changed.

Namespace: DevExpress.XtraCharts

Assembly: DevExpress.XtraCharts.v20.1.dll

Declaration

public AxisBase Axis { get; }
Public ReadOnly Property Axis As AxisBase

Property Value

Type Description
AxisBase

The axis whose scale parameters have been changed.

Examples

Use the ChartControl.AxisScaleChanged (WebChartControl.AxisScaleChanged) event to obtain the axis' automatically calculated grid alignment and measurement unit values, when the scale mode is automatic. Moreover the event arguments contains the axis itself. This event is raised when the scale mode, measure unit, grid alignment or grid spacing of the axis scale has been changed.

private void Form1_Load(object sender, EventArgs e) {
    chartControl1.AxisScaleChanged += OnChartAxisScaleChanged;
}

private void OnChartAxisScaleChanged(object sender, AxisScaleChangedEventArgs e) {
    AxisX axisX = e.Axis as AxisX;
    if (axisX == null) return;
    // In this event, you can access the properties of the corresponding axis, and
    // obtain the automatically calculated value for the axis date-time grid alignment and measure unit.
    axisX.Title.Visibility = DefaultBoolean.True;
    axisX.Title.Text = String.Format(
        "The Axis Grid Alignment Unit is {0} \r\nThe Axis Measure Unit is {1}", 
        e.Axis.DateTimeScaleOptions.GridAlignment.ToString(),
        e.Axis.DateTimeScaleOptions.MeasureUnit.ToString()
    );
}
See Also