title: implementing "where in" clause in Lambda?
body: <p>I have a expression which is returning me Ids:</p>
  
  <pre><code>var UserNotificationIds = _notificationBidderRepos.All(u =&gt; u.BidderId == BidderId).Select(n =&gt;n.BidderId);
  </code></pre>
  
  <p>Another structure has Notifications and requirement is to filter notifications for which Id is provided in <code>UserNotificationIds</code> </p>
  
  <pre><code>var AllNotifications = _notificationRepos.All(n =&gt; n.ExpiresAt &gt; DateTime.UtcNow).ToList();
  </code></pre>
  
  <p>I m trying the following code to query all Notifications but not getting how to impement "where in" in my expression.</p>
  
  <p>Please help</p>