Editing a Flow Document
All the flow document containers you've seen so far are read-only. They're ideal for displaying document content, but they don't allow the user to make changes. Fortunately, there's another WPF element that fills the gap: the RichTextBox control.
Programming toolkits have included rich text controls, in some form or another, for more than a decade. However, the RichTextBox control that WPF includes is significantly different than its predecessors. It's no longer bound to the dated RTF standard that's found in word processing programs. Instead, it now stores its content as a FlowDocument object.
The consequences of this change are significant. Although you can still load RTF content into a RichTextBox control, internally ...
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