The ChartModifier API is by far the most powerful API in the SciChart library. Using this API you can create behaviours which you can attach to a chart to perform custom Zooming, Panning, Annotation & Markers, Legend output and much much more. Any time you want to do something in C# code to alter the behaviour of a SciChartSurface you should be thinking about creating a custom modifier to do it.

Further Reading

For further information, please see our documentation:

• ChartModifiers API
• Custom Modifiers – ChartModifierBase API
• How to Add Mouse Interaction to SciChart

 Also there are several examples of custom modifiers in this Knowledgebase:

• Custom ChartModifiers - Part 1 - Creating a Custom Rollover Modifier
• Custom ChartModifiers - Part 2 - Custom ZoomPanModifier and Zooming on KeyPress
• Custom ChartModifiers - Part 3 - Custom Select and Drag a Series
• Custom ChartModifiers - Part 4 - Custom Legend Data Sources
• Custom ChartModifiers - Part 5 - Select and Drag a Data-Point
• Custom ChartModifiers - Part 6 - Select Data Points via Mouse-Drag