title: Back Button with the Same Session Var in previous page
body: <p>I have a button (Back) in destination Page like this :</p>
  
  <pre><code>localhost:22211/Departments/Departments.aspx
  </code></pre>
  
  <p>The Back on Click should take me back to the previous page with</p>
  
  <pre><code>localhost:22211/School/School.aspx?SId=122
  </code></pre>
  
  <p>How can I use</p>
  
  <pre><code>Response.Redirect(" //? ");
  </code></pre>