How to scroll one richtextbox when user type text in another richtextbox

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C#

Windows

C#4.0

Hi, Everybody,

I need a help its urgent for me.

I have two richtextbox in c# window app.

In first richtextbox i have display the story from database. In second richtextbox is empty and user type text in second richtextbox to seee from first richtextbox.

I want that when user type text in second richtextbox then user does not want to scroll the first richtextbox to see the next line of stroy. I want that first richtextbox is scroll line by line when user type in second richtextbox line by line.

Just like a typing tutor.

Thanks
Ram Kumar