datachart-navigating-chart-using-code.adoc

Navigating Chart Using Code

Topic Overview

Purpose

This topic provides information how to navigate content in the {DataChartName}™ control in code-behind.

Required background

The following table lists the topics required as a prerequisite to understanding this topic.

Topic	Purpose
{DataChartName}	This topic provides an overview of key features in the {DataChartName} control.
Chart Navigation	This topic provides information on using navigation in the {DataChartName} control.

In this topic

This topic contains the following sections

• Navigation Properties

• Code Example

Navigation Properties

The {DataChartName} control provide several navigation properties that are updated each time a panning or zooming action is performed on the chart. The following table list navigation properties in the chart control:

Property	Type	Description	Default Value
WindowPositionHorizontal	double	The X portion of the content view rectangle displayed by the {DataChartName} control.	NaN Displays the chart content positioned left to the X axis.
WindowPositionVertical	double	The Y portion of the content view rectangle displayed by the {DataChartName} control.	NaN Displays the chart content positioned above the Y axis.
WindowRect	Rect	The portion of the {DataChartName} that is currently in view.	0, 0, 1, 1 Displays the entire chart content.
WindowScaleHorizontal	double	The width portion of the content view rectangle displayed by the {DataChartName} control.	NaN Displays the chart content positioned along the X axis.
WindowScaleVertical	double	The height portion of the content view rectangle displayed by the {DataChartName} control.	NaN Displays the chart content along the Y axis.

Figure 1: The {DataChartName} control with the navigation properties’ values visible

Code Example

Navigation of the {DataChartName} control can be managed from code-behind by changing values of the properties listed in Table 2. The following code snippets demonstrate how to zoom and pan chart from code-behind.