title: add querystring parameter in URL
body: <p>I am using asp.net mvc.</p>
  
  <p>here I am not asking on controller logic but at view page.And I am not messing with default setting of url routing.</p>
  
  <p>I have a view having some url like /controller/action?CID=2</p>
  
  <p>In this view I want to put Link having above structure but with different controller.</p>
  
  <p>The point is get the current url parameter and put hyperlink with same Querystring parameter.</p>