title: Thread Sleep by name or some any other method
body: <p>is there anyway to sleep the some <strong>particular</strong><code>thread</code> by name or some any other source
  in case I've two threads</p>
  
  <pre><code>            Thread call = new Thread(() =&gt; open_page(txtbx_1.Text));
              call.Start();
  
              Thread call_2nd = new Thread(() =&gt; open_page(txtbx_1.Text));
              call_2nd.Start();
  </code></pre>
  
  <p>I want to sleep <code>call</code> and <code>call_2nd</code> for at least 15 minutes(but don't want to <code>sleep</code> the main <code>Thread</code>.</p>
  
  <p>Thanks</p>