How to create a ControlTemplate for a WPF TextBox

This is a short post, but has one specific piece of information I want to keep.

Q: If you want to create a ControlTemplate to provide a custom style for a TextBox, how do you specify where the text goes when it's used in WPF?

A: The answer was hidden in the depths of the MSDN Documentation. You have to include a <ScrollViewer> within your ControlTemplate with an x:Name value of "PART_ContentHost".

Here's a noddy example:

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