Sets the value of the MilestoneBarStrokeThickness attached property to a specified element such as a task item, overriding the default value provided by the GanttChartView control. The MilestoneBarStrokeThickness property value indicates the thickness of a milestone task bar's outline in the GanttChartView control. Overriding the default value for a specific item requires that the IsItemAppearanceApplied property of the control to be set to true.

public static void SetMilestoneBarStrokeThickness(
	DependencyObject element,
	double milestoneBarStrokeThickness
)

Public Shared Sub SetMilestoneBarStrokeThickness ( _
	element As DependencyObject, _
	milestoneBarStrokeThickness As Double _
)