Question

How do I store and retrieve data from SQL to be displayed in a RichTextBox?

I mean, how do I bind the RichTextBlock directly to the ViewModel that exposes the XPS/RTF/binary?

Note: I prefer storing it in binary/XPS/RTF format.

Answer 1

Firstly don’t forget binary XPS RTF formats are not human readable.
This may annoy you later. This choice is not always better.

You will not bind a RichTextBlock indeed. You bind your RichTextBox to a RTF or some provider object such as RTFProvider and bind your bussiness object to this Provider.

I used Telerik’s RTF provider here

<telerikDocumentsRTF:RtfDataProvider 
RichTextBox="{Binding ElementName=KTSBasicEditor, Path=Editor}" 
Rtf="{Binding AGREEMENTCONTENT, Mode=TwoWay}" />