title: Is there a unique identifier in asp.net to distinguish between multiple tabs/ browser windows of the same page?
body: <p>Suppose I have a website that processes files uploaded by the user (e.g. storing or pulling data from a sql table). Is there a way to ensure that one user can have multiple tabs/browser windows open with each editing a different file? </p>
  
  <p>Could I use session ID as a way of resolving this issue? I also need to avoid timeout issues like what is mentioned here: <a href="https://stackoverflow.com/questions/454616/asp-net-cookies-authentication-and-session-timeouts">asp.net cookies, authentication and session timeouts</a>, but authentication tickets are shared across all tabs/windows of the same browser, as I understand it.</p>
  
  <p>Thanks</p>