How to: Conditionally Hide Series Labels

• Nov 13, 2018

Handle the ChartControl.CustomDrawSeriesPoint event to conditionally hide series labels. In the event handler, change the CustomDrawSeriesPointEventArgs.LabelText property value to String.Empty to hide a label.

Note

Handling the WebChartControl.CustomDrawSeriesPoint (ChartControlSettings.CustomDrawSeriesPoint) event is necessary to perform the same for the Chart Control for ASP.NET and MVC.

View Example

Form1.cs

private void OnCustomDrawSeriesPoint(object sender, CustomDrawSeriesPointEventArgs e) {
    if (e.SeriesPoint.Values[0] < 1) {
        e.LabelText = String.Empty;
    }
}

Form1.vb

Private Sub OnCustomDrawSeriesPoint(ByVal sender As Object, ByVal e As CustomDrawSeriesPointEventArgs) Handles chartControl1.CustomDrawSeriesPoint
    If e.SeriesPoint.Values(0) < 1 Then
        e.LabelText = String.Empty
    End If
End Sub

The following image demonstrates the result: