title: Do I need to import System.web.UI, to access Session in C# class Library?
body: <p>I Need use Session in C# class Library. For that I need to import Using System.Web.UI. My partial code is</p>
  
  <pre><code>using System.IO;
  using System.Globalization;
  using System.Web
  
  
      namespace sundss_framework
      {
          public class package
          {
  
             Session["Sesval"]="12121";
          }
      }
  </code></pre>