SciChart WPF 2D Charts > ChartModifier API > Zooming And Panning > MouseWheelZoomModifier

The MouseWheelZoomModifier provides zooming, or panning via the mousewheel.


Declaring a MouseWheelZoomModifier in XAML

Declaring a MouseWheelZoomModifier
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<!-- where xmlns:s="" -->
            <s:MouseWheelZoomModifier ActionType="Zoom" XyDirection="XYDirection"/>

Declaring a MouseWheelZoomModifier in Code

Declaring a MouseWheelZoomModifier
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var sciChartSurface = new SciChartSurface();
sciChartSurface.ChartModifier = new ModifierGroup(new MouseWheelZoomModifier());

Key Properties of the MouseWheelZoomModifier

The key Dependency Properties of the MouseWheelZoomModifier are listed below:

Key Properties of the MouseWheelZoomModifier
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/// <summary>
/// The <see cref="MouseWheelZoomModifier"/> provides zooming (or shrinking) of the
/// <see cref="SciChartSurface"/> on mouse wheel scroll
/// Add to a <see cref="SciChartSurface"/> and set IsEnabled to true to enable
/// this behaviour
/// </summary>
public class MouseWheelZoomModifier : RelativeZoomModifierBase
   /// <summary>
   /// Defines the direction of the MouseWheelZoomModifier
   /// </summary>
   public XyDirection XyDirectionProperty = DependencyProperty.Register(...);

   /// <summary>
   /// Determines whether to Zoom or Pan when the <see cref="MouseWheelZoomModifier"/>
   /// executes. The default is Zoom
   /// </summary>
   public ActionType ActionTypeProperty = DependencyProperty.Register(...);

   // ...


Changing from Mousewheel Zoom to Pan

You can change the mode from Zoom to Pan with the MouseWheelZoomModifier.ActionType property. 

Mousewheel Zooming or Panning in only one direction

You can change limit the direction of mouse-wheel zooming or panning with the MouseWheelZoomModifier.XyDirection property.


See Also