Sets the value of the SummaryTaskExtraElementsPositioning attached property to a specified element such as a task item, overriding the default value provided by the GanttChartView control. The SummaryTaskExtraElementsPositioning property value indicates the TaskExtraElementsPositioning to be used to display the dependencies of a task if it is a summary task. Overriding the default value for a specific item requires that the IsItemAppearanceApplied property of the control to be set to true.

public static void SetSummaryTaskExtraElementsPositioning(
	DependencyObject element,
	TaskExtraElementsPositioning summaryTaskExtraElementsPositioning
)

Public Shared Sub SetSummaryTaskExtraElementsPositioning ( _
	element As DependencyObject, _
	summaryTaskExtraElementsPositioning As TaskExtraElementsPositioning _
)