How to change text direction in richtextbox without losing text formatting?

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C#

forms

RichTextBox

formatting

In WinForms, How to change text direction in RichTextBox without losing the text format?
I know that there is RightToLeft option but if i used it while i have formatted text in the richtextbox all the format will be lost which it isn't a good thing in text editors.

I also know that pressing Ctrl+right or left shifts do the job. But is there a way to make it by pressing a button and without sending keys to the RTB?

Thanks in advance.

What I have tried:

I used RightToLeft option but it clear all the format in the text.