When overridden in a derived class, is invoked whenever application code or internal processes (such as a rebuilding layout pass) call System.Windows.Controls.Control.ApplyTemplate. In simplest terms, this means the method is called just before a UI element displays in an application. For more information, see Remarks.

'Declaration
 
Public Overrides Sub OnApplyTemplate() 

'Usage
 
Dim instance As ToolbarSeparator
 
instance.OnApplyTemplate()

public override void OnApplyTemplate()