WinForms Chart – Display Data Source Values in Crosshair Labels

This example displays values from the underlying data source within crosshair labels in a WinForms Chart. When a user hovers over a chart element, the crosshair cursor appears and shows relevant data source values for the selected point. This feature allows users to explore precise data without additional tooltips or legend lookups.

Implementation Details

Use the CrosshairLabelPattern property to specify a crosshair label pattern:

void Form1_Load(object sender, EventArgs e) {
    chartControl1.Series[0].CrosshairLabelPattern = "Unit price: {UnitPrice}\r\n" +
                                                    "Units in stock: {UnitsInStock}\r\n" +
                                                    "Quantity per unit: {QuantityPerUnit}";
}

Files to Review

• Form1.cs (VB: Form1.vb)

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