How to pass parameter from controller to view, view to controller?
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Assume I had a method action called 'ReceivedMessages' that shows all the received messages.  
In that page, if you click on any message, it redirects to its 'Show' page.  

I can go that 'Show' page from 'SentMessages' also.  

It has to be judged where that 'Show' page comes from either 'ReceivedMessages' or 'SentMessages'

It's for breadcrumbs purpose. It has to be something like this 
 
Home > Received Messages > A Message        or  
Home > Sent Messages > A Message

To make this links, I have to pass the path to Received Messages view, and from there to 'Show' controller to create 2nd link in my Breadcrumbs.

How can I archive this???