Gets a reference to the template parent of this element. This property is not relevant if the element was not created through a template.
Assembly: PresentationFramework (in PresentationFramework.dll)
Templates are actually shared objects, where the contents of the template are created only once. Therefore, if you obtain an object reference to an element that came from a template, you may find that the apparent logical tree does not reach to the page root. In order to connect such a template reference to the page's logical tree, you should get the value and continue to navigate that element tree as desired.
will frequently be null for common objects, because if you have obtained an object reference from out of a page in your application through typical means, that element probably was not created from a template. Cases where might not be null would include operations such as hit-testing, event handling for certain low-level input events, or working with enumerators, which may have returned elements that came from templates.