Text Content
The big secret of TextBlock is that its Text property (of type string) is not its content property. Instead, it is a property called Inlines that is a collection of Inline objects. Although the following TextBlock gives the same result as setting the Text property, you’re really setting Inlines instead:
<!-- TextBlock.Inlines is being set here: --><TextBlock>Text in a TextBlock</TextBlock>
A type converter makes the value resemble a simple string, but it’s actually a collection with one Inline-derived element called Run. Therefore, the preceding XAML is equivalent to the following:
<TextBlock><Run Text="Text in a TextBlock"/></TextBlock>
which is also equivalent to the following ...
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