Improving Performance in Windows Forms Chart

7 Jan 20252 minutes to read

Properties

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Chart control Property Description

ChartControl.ImprovePerformance

 Instructs the chart to calculate the axes ranges only before painting and not at every series adding or moving. Performance of a Chart with large number of series will be improved significantly, if this property is enabled. By default this property is false.

CalcRegions

 This property controls the Tooltips, AutoHighlighting properties and RegionHit events. If these properties and events are not used, this property can be set to false for better performance. Default value of this property is true.

ChartSeries.EnableStyles

 Disabling this property will disable the point symbols and point text which speeds up the chart.

ChartSeries.Style.DisplayShadow

 Setting this property to false will not render the series with shadow, which will increase the speed of the chart. By default this property is set to false.

Indexed

 The chart renders faster if the series is not indexed. This of course, may or may not be possible in all cases. By default this property is false.

BackInterior

 The background style for the Chart control is specified using this property and if this property is not set with gradient or pattern style, will help improve the performance of the chart.

ChartArea.BackInterior

 This property sets the back color for the chart area. If not set with gradient or pattern style, will help improve the performance of the chart.

ChartInterior

 This property fills the chart interior. If this property is not set with gradient or pattern style, will improve the performance of the chart.

Methods

BeginUpdate and EndUpdate Encapsulate your "data points adding code" within

BeginUpdate

and

EndUpdate

to improve Chart initialization speed.

See the example code below.

// Improves the performance of the chart when a large number of series are used.

this.chartControl1.ImprovePerformance = true;

this.chartControl1.CalcRegions = false;

this.chartControl1.Series[0].EnableStyles = false;

this.chartControl1.Series[0].Style.DisplayShadow = false;

this.chartControl1.Indexed = true;

//BeginUpdate and EndUpdate methods

private DataModel datamodel1;

ChartSeries series = new ChartSeries("Line 1", ChartSeriesType.Line);

this.chartControl1.BeginUpdate();

// Add a whole bunch of points to the series like this: series.Points.Add(1, 10), etc.

this.chartControl1.EndUpdate();
' Improves the performance of the chart when a large number of series are used.

Me.chartControl1.ImprovePerformance = True

Me.chartControl1.CalcRegions = False

Me.chartControl1.Series[0].EnableStyles = False

Me.chartControl1.Series[0].Style.DisplayShadow = False

Me.chartControl1.Indexed = True

'BeginUpdate and EndUpdate methods

Private datamodel1 As DataModel

Private series As New ChartSeries("Line 1", ChartSeriesType.Line)

Me.chartControl1.BeginUpdate()

'Add a whole bunch of points to the series like this: series.Points.Add(1, 10), etc.

Me.chartControl1.EndUpdate()