#109 – Navigating the Logical Tree in Code

You can use the LogicalTreeHelper.GetChildren method to traverse a logical tree and enumerate all of the objects in the tree.

Every element in a logical tree is a DependencyObject, so you pass a top-level object that derives from DependencyObject into the GetChildren method.  The method returns a collection of children of that object.

 // Enumerate each immediate child of main window.  (Does NOT descend down tree)
 foreach (Object obj in LogicalTreeHelper.GetChildren(mainWindow as DependencyObject))

You could extend this example and descend down the logical tree by calling GetChildren on the children returned from the first call.


About Sean
Software developer in the Twin Cities area, passionate about software development and sailing.

2 Responses to #109 – Navigating the Logical Tree in Code

  1. Christopher Wodarczyk says:

    Is it necessary to cast the mainWindow variable as a DependencyObject in the method call? The object should inherit from DepedencyObject indirectly as a result of being a WPF element already, right?

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