1 out of 6 rated this helpful - Rate this topic

VisualTreeHelper Class

Silverlight

Provides utility methods that can used to traverse object relationships (along child object or parent object axes) in the Silverlight visual tree.

Inheritance Hierarchy

System.Object
System.Windows.Media.VisualTreeHelper

Namespace: System.Windows.Media
Assembly: System.Windows (in System.Windows.dll)

Syntax

public static class VisualTreeHelper

The VisualTreeHelper type exposes the following members.

Methods

	Name	Description
	FindElementsInHostCoordinates(Point, UIElement)	Retrieves a set of objects that are located within a specified point of an object's coordinate space.
	FindElementsInHostCoordinates(Point, Window)	Retrieves a set of objects that are located within a specified point of a window's coordinate space.
	FindElementsInHostCoordinates(Rect, UIElement)	Retrieves a set of objects that are located within a specified Rect of an object's coordinate space.
	FindElementsInHostCoordinates(Rect, Window)	Retrieves a set of objects that are located within a specified Rect of a window's coordinate space.
	GetChild	Using the provided index, obtains a specific child object of the provided object by examining the visual tree.
	GetChildrenCount	Returns the number of children that exists in an object's child collection in the visual tree.
	GetOpenPopups()	Gets all open Popup controls.
	GetOpenPopups(Window)	Gets all open Popup controls.
	GetParent	Returns an object's parent object in the visual tree.
	GetRoot	Returns an object's root object in the visual tree.

Top

Remarks

A visual tree is a programming concept that is shared between WPF and Silverlight. In WPF, Visual is a class. Silverlight 5 does not expose a Visual class as an extension point, but still provides this helper class so that you can examine the visual tree structure.

Version Information